Door trim wholesale: how to convert an object's door schedule into a complete specification without mismatching openings

The project has 180 interior doors. The architect provided a door schedule: D-01 — 100 units, D-02 — 40, D-03 — 25, D-T1 — 10, D-P1 — 5. For architectural review, such a list is already useful: it shows how many opening types there are and how many doors of each type. For a wholesale trim order, this is not yet enough.

The buyer needs to know which door frame profile corresponds to D-01, which casing is used with D-02, where an extension is needed, which doors receive decorative molding, what material each item is made of, in what finish, how many sets go to a specific floor, and what belongs to the first delivery phase. Until this data is available, the phrase "wholesale door trim" describes only a product group, not a ready order.

Therefore, a large door schedule is first converted into a door set schedule. For each opening code, the full composition is recorded: frame profile, casing, extension, decorative molding, and other elements of the specific project. After that, the quantity of elements in one set is multiplied by the number of doors of that type. And only at the next step are identical SKUs from different door types combined into a total procurement summary.

STAVROS has already examined in detail trim for interior doors as a system of frames, casings and extensions. The new task is no longer the selection of an individual part, but the management of a large door order: how not to lose the connection between a specific opening and its set after hundreds of parts are combined into a single purchase.

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From door schedule to a full-fledged moulding order

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Why a door schedule is not yet a door moulding order

The door schedule answers primarily an architectural question: how many doors of each type are in the project and where they are located. For example:

Ordering moldings requires additional levels. D-01 must cover at least the following questions:

• which door frame profile is used;
• which casing;
• whether one side of the opening or both is finished;
• whether an extension is needed;
• which exact extension variant;
• whether there is a decorative molding;
• what material each element is made of;
• what finish;
• which finished lengths are needed;
• how many physical strips result after cutting;
• on which floor and in which room the door is located;
• which delivery phase the set belongs to.

The main principle: first a set for one door type is formed, then it is multiplied by the number of doors. Linear meters appear as a consequence of the sets, not as the starting point.

If you start with the total sum of meters, the project stops seeing door types. For example, 900 m of casing may relate to 100 doors D-01 and 40 doors D-02 in different proportions. With an additional order of five doors, it is already impossible to quickly understand exactly how much casing is needed and which profile to take.

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Why you cannot order “door trim — 1200 meters”

The entry "door moulding — 1200 m" does not answer the question of how many complete door units can be assembled. These 1200 m may simultaneously contain frame profiles, architraves, extension pieces and decorative mouldings. They are not interchangeable.

For example, one standard opening may require:

• 3 frame elements;
• 6 architraves when finished on both sides;
• 3 extension elements if required;
• decorative moulding according to a separate scheme.

Even if all elements are wooden and sold as linear products, an extra 20 m of architrave will not compensate for a shortage of frame profile. The total metreage may match perfectly, yet the specific 12 doors will remain without one item.

The control unit is the complete door set. Linear metres are needed for budgeting, cutting calculations and commercial comparison. Completeness is checked by door types.

This approach is especially important for hotels and residential complexes. If a project receives material in stages, the question should not be "has 400 m of moulding arrived", but "are the D-01 sets on floors 2–4 complete and are all items for them present".

What source data is needed before forming sets

Before calculation, you need to gather more than just the door schedule. The working package typically includes:

• a door schedule with stable type codes;
• floor plans;
• room numbers;
• door opening dimensions;
• approved door frames;
• wall thickness and construction;
• information about the wall's finish;
• list of approved casings;
• use case for extension jambs;
• decorative moldings if present;
• materials;
• finish codes;
• sequence of installation and delivery.

Wall thickness is needed not just for reference. It determines whether the frame width is sufficient or the opening requires an extension. The topic of choosing the extension width itself is covered in detail in the material door extension. In this article, the approved extension option simply becomes part of the set for a specific type.

Wall finishing also affects the door set. After plastering, panels, or other cladding, the final thickness of the opening may differ from the earlier architectural dimension. If the extension is calculated based on the old thickness, a systematic additional order will arise on site.

The initial list must be up to date. If the project has already changed the type of D-03, you cannot assemble it according to the old PDF and then try to correct the delivery at the warehouse.

Coding of door types and unified identity across all documents

A single door code must be used in all documents

D-01 on the architectural plan must remain D-01 in the door schedule, picking specification, supplier order, and packing list. This simple rule sharply reduces the risk of mis-sorting.

Bad parallel names:

• "regular room door";
• "standard white";
• "type 1";
• "door on the right";
• "the one on the second floor".

If the contractor uses D-01, procurement uses T1, and the supplier uses "standard white", the project effectively creates three identification systems for a single opening. Sooner or later, one line will be duplicated or lost.

The code must belong to the door type, not the location. Room 312 can have door D-01. Room 313 can also have D-01. The opening code and the room number are stored in different fields.

This way you can simultaneously see the repetition of types and the exact location of each set.

Complete door set: frame, casing, extension and decorative moulding

What constitutes a set for one door type

A set is the complete list of moulded elements required for a specific opening type. For D-01 it may include:

• frame profile K-01;
• casing N-01;
• extension DB-01;
• decorative moulding M-01;
• other project elements, if provided.

Not every door type must contain all four groups. A technical door may have a frame and a simple casing without decorative moulding. An opening in a thin partition may not require an extension. A grand portal, on the contrary, may have several decorative profiles.

Why this table is stronger than four independent lists. It immediately shows whether the complete set is defined for each door. In a separate casing schedule, you can have all 1800 m and still fail to notice that an extension was forgotten for D-02.

Door frame profile — a separate structural line

The door frame profile forms the basic structure of the opening. On STAVROS, there is a separate one for this Door Frame Profile, but the specific DK-001 is placed in its own product card.

The current DK-001 measures 100×42×2400 mm and is constructed from plywood/MDF. It serves as a good example of why the line "wooden box" is insufficient. The order must include:

• exact article number;
• the material;
• size;
• product length;
• the quantity of source elements;
• door types where it is used.

The number of boxes is calculated from the number of door sets. If D-01 uses three box elements and there are 100 such doors, the project gets 300 finished box elements before cutting analysis. If the lengths of the verticals and the top crossbar differ, they are kept as separate part groups.

For serial purchasing, there is no need to turn DK-001 into an impersonal linear meter too early. First, the long verticals and top elements of each set are provided, then the actual quantity of source strips is calculated.

Casing is counted as a separate group, even if it is part of the same door set

The casing belongs to the same opening as the box profile, but for purchasing it is a different item. It has its own article number, its own finished lengths, its own cutting plan, and sometimes a different finish.

For each door, you need to know in advance how many sides are finished with casing. This article does not recalculate the separate topic of "one or two sides," but the parameter must be recorded in the set. For example:

D-01 / casing N-01 / both sides / 6 parts.

If D-02 is installed only on the corridor side:

D-02 / casing N-02 / one side / 3 parts.

The number of sets is clearer than the total linear meters. The entry "N-01 — 80 door sets" immediately shows the purpose. Then, within each set, two verticals and a top part are laid out for each side. Only after that can the source strips be calculated.

If you need to choose a specific profile, it makes more sense to go to the specialized material about Wooden casings, rather than mixing the choice of casing shape with wholesale configuration of hundreds of openings.

Extensions should remain a separate line in the door set

The extension covers the difference between the frame width and the actual wall thickness. It is not a casing and not an "extra board," but an independent element of the door unit. Therefore, in the set it gets a separate code, for example DB-01 or DB-02.

Bad designations:

• "wide extension";
• "narrow extension";
• “the one on the second floor”;
• “for a thick wall”.

Working system:

Why the extension cannot be hidden inside the casing line. If the wall thickness changes, the casing may remain the same while the extension changes. A separate line allows recalculating only the affected part of the set.

Before placing a serial order, the actual wall thickness must be checked. If an early architectural schedule gave one dimension, but after finishing the wall became thicker, additional extension orders will arise systematically across the entire floor. That is why the approved door extension must be linked to a specific wall type and door code.

Decorative moldings for doors are calculated separately from casings

In entrance doors or portals, the casing may be supplemented by a separate decorative molding. Even if both profiles run around the same door, they have different functions and different cutting patterns.

For example, D-02 receives:

• casing N-02 — two verticals + top piece on each side;
• molding M-01 — decorative frame only on the corridor side;
• extension DB-02 — along the depth of the opening.

If everything is written as the line "door framing — 14 m", it is impossible to verify during delivery what exactly is missing.

There is a separate article about choosing a decorative profile polyurethane create a classic frame between the wall and ceiling. The profile height varies from minimalist 50 mm to ceremonial 200 mm — the choice depends on the room's height and style. In a room with 2.7 m ceilings, a 150 mm cornice will look excessive, 'pressing' from above. And in a hall with 3.5 m ceilings, a narrow 60 mm cornice will get lost, failing to visually mark the boundary.. The approved article number must already be in the complete specification.

Summary matrix of door types and calculation of the number of sets

The summary matrix of door types becomes the main working document

After selecting the frame, casing, extension, and decorative molding, a matrix is formed:

This table solves two tasks at once. First, it shows whether the full composition is defined for each type. Second, after multiplying the sets, you can obtain the purchasing requirement for each SKU.

If the same N-02 is used in D-02 and D-03, first the requirement is calculated separately for 40 and 25 doors, and then the totals are combined. The origin of the volume is preserved.

The quantity of elements is first calculated by door sets, not by linear meters

Calculation principle:

number of elements in one set × number of doors of this type = requirement for the item.

For example, D-01 requires:

• 3 frame elements;
• 6 architraves;
• 3 extensions.

For 100 doors:

• frame parts — 300 finished elements;
• architraves — 600 finished elements;
• extensions — 300 finished elements.

Only after this is each group broken down by actual lengths and converted into source strips.

Why this is better than total length. If 600 door casings require 2000 m, and box elements require another 700 m, the project still controls the number of door sets. Even with a slight deviation in total meterage, it is clear whether there are enough parts for all 100 doors.

Typical floors, public areas, and unique openings

A typical floor can be scaled only after checking differences

A hotel floor is often repeated, but "typical floor × 10" works only after verification.

On other floors, the following may differ:

• technical rooms;
• service doors;
• end rooms;
• public areas;
• elevator lobbies;
• fire doors;
• non-standard openings.

Convenient form:

Floor 2 = typical floor.

Floor 3 = typical floor + 2 doors D-04 − 1 door D-02.

Floor 4 = typical floor + 1 door D-T2.

This way the specification is not created anew, but the changes remain explicit.

The room number must be kept until the very delivery

Even if the door trim is purchased in one large batch, the room number helps to trace the origin of the set.

Working line:

Floor 3 → room 312 → door D-01.

If a shortage of one casing is found near the opening, you can check which set should have gone to room 312 specifically, instead of looking for the cause in the general warehouse stock.

This is especially useful with hundreds of similar doors. Without the room number, the error is discovered late: the material looks similar but belongs to a different finish or a different type of extension.

Public areas should be separated from the mass guest room stock

Lobbies, restaurants, and formal corridors more often contain:

• tall doors;
• wide openings;
• decorative portals;
• additional moldings;
• non-standard architraves;
• other finishes.

Even if the lobby uses the same frame profile, the entire door set may differ. Therefore, D-P1 should not be included in the nearest mass D-01 just to reduce the number of rows.

Five formal doors are easy to lose among 175 standard ones. That is why rare types are coded separately and remain visible in the summary matrix.

Technical doors receive a separate type, not the label “D-01 without decor”

A technical opening may use a simpler architrave, a different material, or even a different frame profile. If it is called “D-01 without decor,” the specification begins to depend on a comment.

Better:

D-T1 = K-03 + N-T1 + finish O-T1.

This way the set is unambiguous and you don't need to remember which elements must be removed from D-01.

A separate code reduces the risk of picking errors. In the warehouse, the D-T1 package won't accidentally end up in the numbered stock, and the D-01 decorative set won't be spent on a technical room.

Unique openings must be flagged even when there is only one

A single portal in the main hall is easy to lose in an order of 180 doors if all positions are first summed up in meters.

A unique opening needs its own code, for example D-P1, even if it occurs only once. All special elements and finishes are preserved in the set.

A rare position is often more critical by risk than a mass one. If a standard casing is missing, it can be quickly pulled from a large order. If a unique decorative molding for a single portal is missing, the entire formal assembly stops.

Materials, finishes, and product configuration

One profile's material creates different purchasing lines

If N-01 exists in beech and oak, these are two different purchasing configurations, even with identical geometry.

In the specification:

N-01 / oak / finish O-01.

N-01 / beech / finish O-02.

They cannot be combined into a total linear footage before delivery.

Why material matters. It affects appearance, finish, sometimes the product length, and the ability to reorder later. Therefore, the "material" field must be present on every line, not only in the general project header.

One casing in two colors — two configuration items

For example, N-01 is used:

• in white enamel O-01;
• in natural oak O-02.

The SKU is the same, but the physical stock is different. The O-01 balance cannot be counted as a reserve for O-02.

There is no need to create a new informal SKU for each color. It is enough to:

product SKU + finish code.

This maintains the link to the product card while allowing the warehouse to distinguish between variants.

From sets to source planks and actual procurement volume

Source planks are counted only after sets are approved

Until the number of doors, set composition, materials, and finishes are approved, it is too early to calculate cutting.

After approval, each SKU gets its own pool of parts. For example, N-01 may include:

• 200 verticals at 2200 mm;
• 100 top parts at 900 mm;
• additional parts for other door types.

Long verticals are allocated first. Then short top elements can be obtained from suitable offcuts. This is exactly how the net linear meters turn into the procurement quantity of whole planks.

You cannot use leftover box profile as a door casing. Even if the material is the same, the geometry is different. Each SKU is calculated separately.

Reserve, reorder, and service history

It is better to calculate reserve by door types rather than by total length

The entry “door trim — reserve 50 m” is almost useless. It is unclear which doors can be repaired with this reserve.

Better:

A rare door may require more attention than a mass-produced one. For D-P1, it is useful to keep whole elements of the unique profile, because random offcuts of the standard N-01 will not help during repairs.

Delivery batches, marking, and acceptance of the first shipment

Delivery batches must be selections from one common specification

For example:

• batch 1 — building A;
• batch 2 — floors 1–3 of building B;
• batch 3 — floors 4–6;
• batch 4 — common areas.

You must not create a new independent specification for each shipment. Otherwise, a different N-01 or a new finish could quietly appear in batch 3.

There must be one consolidated schedule for the project, from which the required batch is selected.

This corresponds to the logic of the article about Wholesale building material suppliers: the item is first recorded in a single approved specification, and only then is it purchased and shipped in stages.

Marking must preserve the door type, not just the item code

Minimum packaging marking:

• project;
• cabinet / floor;
• door type;
• article number;
• the material;
• finishing;
• quantity.

If you write only "N-01 / 12 pcs.", the installer will still have to figure out which doors the package belongs to.

If one N-01 is used on five floors, adding the door type and floor sharply reduces the risk of accidentally issuing material to the wrong place.

The first delivery must be checked by sets, not by the number of packages

During acceptance, you need to go through the chain:

delivery → door type → set components.

For D-01, the following are checked:

• box profile;
• platband;
• extension;
• the material;
• finishing;
• quantity;
• marking;
• compliance with the current version of the specification.

The number of cargo units alone says nothing about completeness.

Changes, substitutions, and specification version

Changing one door type should not force rewriting the entire order

On a long project, changes are inevitable. For example, the architect changes D-03: instead of H-02, a new casing H-03 is approved, and decorative molding M-02 is excluded. A proper system does not create a new specification for all 180 doors. Only the D-03 line and the procurement totals dependent on it change.

Working note:

D-03 / revision 2 / K-02 + H-03 / no extension / no molding.

All D-01, D-02, D-T1, and D-P1 remain unchanged.

The old revision must no longer be used for future deliveries. Otherwise, the designer works from the new version while the supplier keeps assembling the old one. For a large project, it is convenient to have a revision number for the general specification, for example:

DV-PG-R04.

Within R04, you can see that D-03 has been changed, while the other door types were carried over without edits.

A repeat order must reference the door type, not the manager's memory

Bad reorder:

Please send more trim for five white doors, like last time.

Correct:

REORDER-02 / D-01 × 5 sets / K-01 + N-01 + DB-01 / oak / O-01 / specification DV-PG-R04.

If only one component of the set is required:

REORDER-03 / D-02 / N-02 / oak / O-01 / 3 sets of casings.

In a few months, the staff may change. The door code and SKUs remain meaningful regardless of who remembers the previous delivery.

That is why wholesale purchases of building materials must be formalized as a structured order by SKUs and quantities, not as a continuation of a conversation.

Reference door assembly before mass production

The reference door assembly must be built before mass production

Individual elements can be correct on their own yet work poorly together. The frame fits the size, the casing is beautiful, the extension is chosen for the wall thickness, the molding matches the style — but after assembly a conflict appears:

• the casing protrudes too much relative to the extension;
• the molding intersects with the baseboard;
• the extension does not align with the wall plane;
• the casing width looks disproportionate to the opening;
• the finishes of the elements differ visually more than expected;
• the decorative molding interferes with the switch or the adjacent panel.

The reference opening tests the entire system. For mass-produced D-01, it is useful to assemble a real assembly:

box profile → extension → casing → molding if present → junction to the wall → junction to the baseboard.

Once the reference is approved, the D-01 set becomes not a collection of individual SKUs, but a verified configuration.

A separate reference is needed for the unique D-P1. One cannot assume that a grand portal is automatically confirmed by a standard numbered opening.

Practical example: a project with 180 doors

Practical example: a project with 180 doors

Initial door schedule:

• 100 × D-01;
• 40 × D-02;
• 25 × D-03;
• 10 × D-T1;
• 5 × D-P1.

First, five sets are formed.

Now each set is expanded into the number of finished elements.

Let's say D-01:

• K-01 — 3 parts;
• N-01 — 6 parts;
• DB-01 — 3 parts.

For 100 doors:

• K-01 — 300 finished parts;
• N-01 — 600;
• DB-01 — 300.

D-02 may contain 3 K-01, 6 N-02, 3 DB-02, and 3 M-01. For 40 doors:

• K-01 — another 120 parts;
• N-02 — 240;
• DB-02 — 120;
• M-01 — 120.

After a similar calculation, D-03, D-T1, and D-P1 with identical SKUs are combined.

Summary by SKU after calculating sets

Why the origin of the volume cannot be erased after summing. If, for example, N-02 is ultimately needed for 65 doors, it should remain visible how many sets belong to D-02 and how many to D-03. If only D-03 changes, the purchaser adjusts the corresponding share rather than recalculating the entire N-02 from memory.

The finished meterage and the purchasing quantity of door trim differ

After counting the sets, each item is converted into the actual lengths of the parts. For example, H-01 for one door on both sides may have:

• 4 vertical elements of 2200 mm each;
• 2 top elements of 900 mm each.

Finished length of one set:

4 × 2.2 + 2 × 0.9 = 10.6 m.

For 100 doors — 1060 m of finished H-01 length. But if the source strip is 2400 mm, 4 verticals of 2200 mm require four separate strips per door. The top parts of 900 mm can be combined two at a time:

900 + 900 = 1800 mm.

That is, one set will require roughly 5 source strips — 4 for the verticals and 1 for the two top parts, if the cutting technology and blank quality allow. For 100 doors — about 500 source strips, before a separate reserve.

The arithmetic minimum of 1060 ÷ 2.4 ≈ 442 strips is insufficient here, because finished meters do not account for the structure of the long vertical parts. This is a classic case where the math says “442,” but the cutting plan requires more.

The box profile and the casing are cut according to different logic

The box usually contains long verticals and a top crossbar. Architraves also consist of verticals and top elements, but the dimensions, profile, and number of sides may differ.

You cannot create a single shared cutting plan "for the door." K-01 and N-01 are physically different products.

First, the K-01 map is built:

• long verticals;
• top crossbars;
• short special parts, if any.

Separately — the N-01 map.

Even if the material is the same and the length of the source strip is 2400 mm, leftovers are not mixed between SKUs.

The reserve must be linked not only to the SKU but also to the door type

Suppose N-02 is used in both D-02 and D-03. A shared reserve of N-02 across several whole strips is useful, but for a full door repair you need to understand which other components of the set will be required.

Therefore, two levels can be stored:

• item reserve — additional H-02 strips;
• complete reserve — full stock for one door D-02 or D-03.

For the mass-produced D-01, an item reserve of the main SKUs is sometimes sufficient. For the rare D-P1, it is safer to keep a full set of unique elements.

The first batch is needed to check completeness and labeling

On the first floors, not only the quantity is checked, but also the identification system.

It is useful to select 5–10 doors of different types and go through the entire path:

plan → room → door type → set → packaging → actual elements at the opening.

If the D-01 packaging does not allow you to quickly understand where K-01, H-01, and DB-01 are, the labeling needs to be improved before the next batch.

If D-02 is constantly missing one decorative element, the problem lies in the kit model itself, not in a random error on a specific floor.

When a complex configuration system is excessive and how to work with multiple suppliers

When a general configuration system can be excessive

For an apartment with five doors, one finish, and one casing type, a large matrix of dozens of fields may be unnecessary. A precise list of elements for each opening is enough.

A detailed configuration system is justified if there are several factors:

• dozens or hundreds of doors;
• several door types;
• several floors or buildings;
• different materials and finishes;
• extension jambs of different depths;
• decorative moldings;
• phased deliveries;
• reorders after several months;
• several installation crews.

The criterion is simple: if, six months later, another employee can use the specification to understand which set belongs to D-02 and how many of it are needed for floor 4, the structure is sufficient.

The room summary and the article summary must exist simultaneously

A single specification has two viewing directions. For the designer and installer, it is more important to see the door as a whole: what should be in room 312, what type it is, and whether the set is complete. For procurement, the total by article is more important: how many K-01, N-01, DB-01, and M-01 items to order in total.

The room summary answers the question: “Is a specific door complete as a set?”

The article summary answers the question: “How many items of one configuration in total does the manufacturer need?”

The figures are for demonstration: they show the aggregation method, not a ready-made specification for a specific project.

If the total line for N-02 equals 402, the project can still see the origin: 240 parts belong to D-02, 150 to D-03, and 12 are reserve. If only D-03 changes, there is no need to re-parse all 402 items.

Queue balances must reconcile with the overall order

Phased delivery must not create several independent “truths.” There is an overall approved volume, and each queue is a part of it.

For line N-01, a simple balance can be maintained:

If the remaining balance is negative, the same item has been allocated twice. If after the last queue a positive unexplained quantity remains, part of the order is not linked to a destination.

Such a balance is especially useful when building materials wholesale from the manufacturer they are ordered under a single contract but arrive by building sections and floors.

An incomplete door set cannot be considered closed just because most of the items are ready

Let us imagine that for a floor, all boxed profiles and D-02 casings are ready, but DB-02 extenders have not yet been produced. According to the item summary, most of the order is ready. According to door sets, not a single D-02 is fully closed.

It is useful to distinguish between statuses:

• complete set — all door items are provided;
• partially ready — some elements are present, some are missing;
• ready for the installation stage — an incomplete set is deliberately shipped for a specific job;
• on hold — one of the critical lines is being changed or has not been approved.

This is not warehouse bureaucracy, but protection against a false sense of readiness. If an extension is structurally necessary, the door does not become a complete set just because the casing is already on site.

If one element is temporarily unavailable, it cannot be silently replaced with a similar one

Suppose H-02 is temporarily unavailable, and the supplier offers a visually similar H-04. For five private doors, such a replacement can sometimes be quickly agreed upon. For 65 doors of a large project, this is already a specification change.

Need to check:

• width and relief;
• the material;
• commercial length;
• compatibility with the extension;
• the junction with the baseboard;
• finish;
• cutting change;
• visual difference from the already installed
  

  If the project is already moving to commercial оформление, the article about wholesale purchase of building materials and the allocation of responsibility.

  For a formal order, the material about wholesale purchases of building materials is used. If you need to calculate the total volume of trim for finishing, the relevant article is wholesale purchase of building materials.

  When comparing offers building materials at wholesale prices they must be compared against the same specification, otherwise a cheaper offer may simply not include part of the sets.

  When the order is manufactured, delivery of finishing materials continues the same structure already on site: door type, item code, finish, quantity, floor, and room.

  Edge-case door scenarios: wall thickness, different sides, tall and wide openings

  A single door code needs to be split if the actual wall thickness changes the set

  Sometimes the architectural schedule shows one type D-01 across the entire room numbering stock: the same leaf, the same opening, and the same casing. But after checking the walls, it turns out that some doors are installed in a partition of one thickness, while others are in a reinforced wall with additional finishing. The frame profile and casing may remain the same, but a different extension is already needed.

  In such a situation, there are two workable approaches.

  Approach 1 — create a door subtype:

  D-01A = K-01 + N-01 + DB-01.

  D-01B = K-01 + N-01 + DB-03.

  Approach 2 — keep D-01, but add a configuration variant by wall type. For example:

  Door type	Wall type	Frame	Casing	Extension	Quantity
  D-01	C-01	K-01	H-01	DB-01	72
  D-01	C-02	K-01	H-01	DB-03	28

  Which option is more convenient depends on the project coding system. The main thing is not to leave 100 D-01 doors on one line if they actually require two different extensions.

  Why this is critical for reordering. If two extensions are missing on floor 5, the phrase “send DB-01 for D-01” may turn out to be incorrect: the specific openings belong to wall C-02 and need DB-03. The room number or wall type must be preserved until the order.

  The same door can have different finishes on its two sides

  In large projects, one side of the door opens into a corridor, while the other opens into a room, technical space, or bathroom. The architecture of the two sides may differ.

  For example, D-02:

  • on the corridor side — decorative casing N-02 + decorative molding M-01;
  • on the room side — simple casing N-03 without molding.

  If you write “D-02 — casing 6 pcs.”, the information will be lost. It is better to split the set:

  D-02 / side A / N-02 × 3 + M-01 × 3.

  D-02 / side B / N-03 × 3.

  The sides are needed not for the door orientation, but for the finish. Left or right door leaf hanging may not change the trim at all. However, the corridor and room sides may have different profiles, colors, and numbers of decorative elements.

  This is especially important in hotels, where the corridor must have a unified formal system, while inside the room the door surround can be more subdued.

  Tall doors cannot be considered an ordinary type with increased dimensions

  If D-03 is 300–500 mm taller than the standard D-01, it is not only the total length of the vertical elements that changes. Different requirements arise for the initial length of the strip.

  For example, a standard architrave has a vertical of 2200 mm and fits within an initial strip of 2400 mm. A tall door has a vertical of 2500 mm. With the same commercial length of 2400 mm, a one-piece component is physically impossible.

  This means the project must adopt a separate decision:

  • choose a version with sufficient commercial length;
  • approve a joint if it is acceptable;
  • choose a different profile;
  • change the decorative scheme.

  You cannot simply write “D-03 is 20% more in dimensions.” Here, the feasibility of the component itself changes.

  It is especially important to flag tall doors before requesting a price. A cheap commercial offer for a 2400 mm profile may not cover the requirement for a one-piece 2500 mm vertical at all.

  Double-leaf and wide openings must have a separate door type

  A wide or double-leaf opening changes the upper horizontal component, may require a different casing profile, an additional decorative composition, and a different number of moldings.

  If such a door occurs five times, it cannot be hidden in D-01 with the note "wide". It is better to create D-05 or D-P2.

  A separate type allows you to:

  • check the length of the upper element;
  • calculate the extension separately;
  • preserve the symmetry of decorative moldings;
  • assign its own reserve;
  • avoid mixing the packaging with mass-produced doors.

  The complete specification must survive a change of contractor

  On projects lasting a year or more, door work may pass from one crew to another. If knowledge of the set exists only in the foreman's head, the new contractor will start rebuilding the system on site.

  A good specification should allow a new participant to understand without verbal handover:

  • what D-01 means;
  • which elements are included in the set;
  • which side is finished with which casing;
  • which extension corresponds to which wall;
  • which finishes are in effect;
  • which revision is current;
  • what has already been delivered and what remains.

  That is why coding and revision numbers are not a formality. They make the order reproducible regardless of the team's personnel composition.

  Pre-payment control: errors and checklist

  Checklist before paying for a large door order

  Inspection	Question	If the answer is "no"
  Types	Do all doors have stable codes?	stop the summary and eliminate duplicates
  Sets	Are the frame, casing, extension, and decor defined for each type?	set is incomplete
  Walls	Is the wall thickness confirmed for extensions?	do not release the extension to production
  Sides	Do the finishes on both sides of the door match?	split sides
  Material	Is the material specified in each line?	risk of mixing oak, beech, and MDF
  Finishing	Is there a finish code?	cannot verify color mismatch
  Layout	Do long parts physically fit into the source planks?	review the SKU or assembly
  Queues	Does the sum of deliveries equal the total order?	there is double allocation or a gap
  Version	Is there one active revision?	high risk of mixing old data

  This table does not replace a design review. It is needed before commercial confirmation, when structural errors can still be corrected without returning finished material.

  When part of the door trim is genuinely not needed

  The configuration system should not automatically add a frame, casing, extension, and molding to every door. The complete set is determined by the actual door assembly.

  An extension is not needed if the frame width already covers the finished wall thickness and the design does not provide for a separate extension plane. Adding it "just in case" means creating extra product that can no longer be used rationally.

  Decorative molding is not needed if the architecture of the opening is based only on the casing. It should not appear in the set simply because it is present in a different type of entrance door.

  Casing may not be required on one side if the design deliberately uses another way of finishing the opening. But this must be fixed in the door type, not decided by the installer after delivery.

  A rare element cannot be extended to the entire standard stock. If M-01 is needed only in ten lobby doors, it is not included in D-01 for the sake of unified procurement. A single order should combine data, not make all doors artificially identical.

  Commercial comparison and internal linking

  How to compare supplier offers for a single door set

  If one supplier quotes a price "per linear meter of door trim" and another by article numbers and sets, the comparison must be brought to a single structure.

  For D-01, both parties must calculate:

  • the same box profile;
  • one architrave;
  • one extension option;
  • same material;
  • the same finish;
  • one door count;
  • the same reserve.

  Only after that is the total cost of 100 D-01 sets compared, rather than the price of a single linear meter. This is exactly how construction materials should be correctly evaluated at wholesale prices.

  A cheap meter can result in a more expensive set. If a given item has an unsuitable commercial length, some of the source planks end up as inconvenient leftovers. If the second supplier offers a more expensive plank, but it yields verticals and top parts more efficiently, the full cost of the door may turn out to be lower.

  The completeness of the composition must also be compared. One calculation may include an extension and molding, while another includes only the frame and architraves. Until the contents of the set are aligned, the commercial totals are not comparable.

  How to maintain order structure when working with multiple suppliers

  Sometimes one manufacturer supplies the box profile, another supplies a special decorative molding, and a third company makes the door leaf. This does not prevent the use of a single complete specification.

  Matrix D-01 still stores the full composition, but each row now has a "supplier" field. This makes it possible to see whether the door set is complete, even if the physical batches come from different sources.

  Door type	Element	Article	Supplier	Status
  D-01	Frame	K-01	supplier A	done
  D-01	Casing	H-01	supplier A	done
  D-01	Extension	DB-01	supplier A	done
  D-01	Decor	—	—	Not required

  The advantage of a single matrix is that the project does not calculate readiness by suppliers. It calculates readiness by doors. If a special M-P1 is delayed at a particular manufacturer, only D-P1 is blocked, not the entire room inventory.

  When choosing a partner, finishing material suppliers are evaluated, among other things, by their ability to reproduce the approved configuration in subsequent phases and additional orders.

  Why the door set must be stored after installation is completed

  After the facility is handed over, the complete specification remains useful for operations. If two years later the door casing of door 312 is damaged, the service department sees:

  312 → D-01 → N-01 / oak / O-01.

  There is no need to remove the profile and try to identify it from a photograph. If the extension is damaged, D-01 and the wall type immediately show which DB-01 was used.

  The history is especially valuable for rare doors. The grand entrance D-P1 may have a unique molding that is difficult to restore from the general appearance after several years. The archive line preserves the item code, material, and finish.

  This is another reason not to destroy the origin of the volume after the general procurement summary. Procurement ends, but the identity of the door set continues to work.

  15 mistakes in wholesale door trim procurement

  1. Ordering in total linear meters. It is impossible to verify the number of complete door sets.
  2. Not coding door types. The same door is called by three different names in different documents.
  3. Keeping frames, casings, and extensions in independent tables without a door matrix. The individual totals are correct, but the complete door set cannot be verified.
  4. Using verbal names instead of item codes. "White wide casing" is not a product identity.
  5. Not saving the room number. The error is discovered only near a specific opening.
  6. Automatically multiplying the first floor by all the others. Technical and common-area doors are lost.
  7. Mixing mass and unique openings. Five grand entrance doors disappear inside the general total.
  8. Mixing materials of the same profile. Oak and beech end up on the same line, even though they are different procurement configurations.
  9. Mixing finish options. The correct profile arrives in the wrong color.
  10. Issuing material by article number only. The installer cannot tell which door type and floor the package belongs to.
  11. Creating a new independent specification for each delivery. The queues begin to diverge from one another.
  12. Not storing the revision number. The supplier and designer work from different versions.
  13. Ordering a reorder from memory. After a few months, the exact configuration cannot be restored.
  14. Not assembling a reference door unit. Incompatibility of elements is discovered only in the series.
  15. Counting only meters and not controlling the number of sets. There is enough material overall, but specific doors cannot be completed.

  Checklist before the wholesale order

  Check	What needs to be determined
  Door types	stable codes D-01, D-02, etc.
  Quantity	number of doors of each type
  Rooms	floor and room number
  Frame	item code, material, size
  Casing	item code and number of sides
  Extension	code and option for specific wall thickness
  Molding	if included in the door set
  Material	for each product line
  Finishing	code of the approved option
  Finished parts	lengths and quantity
  Source planks	purchase quantity by cutting plan
  Reserve	product or complete set
  Queue	building / floor / zone
  Labeling	project, door, item code, finish
  Revision	one active specification version

  Final algorithm: from door schedule to picking specification

  Final algorithm: from door schedule to picking specification

  1. RECORD ALL DOOR TYPES AND THEIR CODES

  ↓

  2. VERIFY QUANTITY AND ROOMS

  ↓

  3. ASSEMBLE THE COMPLETE SET OF EACH TYPE

  ↓

  4. SEPARATE THE CASED PROFILE, CASING, EXTENSION AND MOLDING

  ↓

  5. RECORD THE SKU, MATERIAL AND FINISH

  ↓

  6. MULTIPLY THE SET BY THE NUMBER OF DOORS OF THIS TYPE

  ↓

  7. CONSOLIDATE IDENTICAL SKUS WHILE PRESERVING VOLUME ORIGIN

  ↓

  8. BUILD A CUTTING PLAN FOR EACH SKU

  ↓

  9. OBTAIN THE PURCHASE QUANTITY IN SOURCE STRIPS

  ↓

  10. ADD RESERVE BY DOOR TYPES AND RARE ITEMS

  ↓

  11. SPLIT THE TOTAL ORDER INTO PHASES

  ↓

  12. PREPARE LABELING AND PACKING LIST

  ↓

  13. CHECK THE FIRST BATCH BY COMPLETE DOOR SETS

  ↓

  14. MAKE CHANGES ONLY VIA A NEW REVISION

  What the final order line should look like

  After all calculations, the commercial line should be specific enough that a new employee six months later can understand it without additional correspondence. For example:

  N-01 / oak / 2400 mm / finish F-01 / doors D-01 / base quantity ___ pcs. / installation reserve ___ pcs. / operational reserve ___ pcs. / phase 1–3 / specification DW-PG-R04.

  If a product is used in several door types, the final line may be consolidated, but the breakdown by D-01, D-02, and other types is retained in the summary. This provides a cross-check: the purchaser can always explain the origin of the final quantity.

  Before payment, it is useful to perform one more manual check: select one high-volume type, one technical opening, and one unique opening, and trace the chain from the plan to the purchasing line. If for each opening the frame, casing, extension, moulding, material, finish, and quantity are clearly visible, the system truly works. If at any step you need to "ask the designer what was meant here," the specification is not ready yet.

  If the entire project is procured by materials in bulk, the door branch must still remain self-contained within the overall supply. Overall logistics do not cancel the completeness of a specific opening.

  Conclusion: door trim is ordered wholesale by door sets, not by total length

  A large door schedule is not yet a ready trim order. It only shows door types and quantities. To obtain a complete specification, each type must be broken down into specific elements: frame profile, casing, extension, and decorative moulding, if provided.

  After that, the set is multiplied by the number of doors, identical SKUs are summed up, but the origin of the volume is preserved. Only at the next stage are the finished elements converted back into the original planks according to the actual cutting layout.

  Such a system is especially important at sites with hundreds of similar openings. It allows you to check not only the total linear meters, but also the completeness of each door, preserve the floor and room, separate materials and finishes, form a reserve, and release several delivery batches from one up-to-date specification.

  The main request for door trim wholesale remains on this page. To choose a door finishing system, the reader can go to the article about trim for interior doors, for the frame — to the material about the door frame profile, for the extension — to the specialized article about Wooden extension.

  If the project has already reached a commercial order, construction materials wholesale from the manufacturer should be ordered according to the approved product lines. During delivery, the structure is preserved down to the door type and room. Then the door set does not fall apart into random linear meters, and each plank remains part of a clear system.

  Final formula:

  door schedule → door code → complete set → SKUs → materials → finishes → number of sets → cutting layout → original planks → reserve → floor → batch → delivery.