By floor 2400 mm, rise 1800 mm: will a round wooden handrail PR-004 with a length of 2400 mm be enough

The stair flight takes up 2400 mm on the floor, and the rise between levels is 1800 mm. At first glance, it seems that a round handrail 2400 mm long should fit: the horizontal size of the stairs and the length of the product match. But the handrail is not installed along the floor. It runs along an inclined line, so the actual length of the straight section is greater than the horizontal projection.

For a straight flight without a landing, this length can be preliminarily found using the Pythagorean theorem: the square of the inclined length equals the sum of the squares of the horizontal projection and the rise height. For the example 2400 × 1800 mm:

√(2400² + 1800²) = √(5,760,000 + 3,240,000) = √9,000,000 = 3000 mm.

Therefore, the round PR-004 with a length of 2400 mm does not cover such a straight inclined section with a single piece: the calculated line is already 3000 mm before checking the actual start and end points of the handrail. If the project requires a continuous one-piece handrail over this entire section, a different product or a different structural scheme must be considered.

In this section you can buy wooden handrails for stairs, but you cannot choose a model based on one length alone. The PR-004 has a round profile with a diameter of 50 mm and a fixed length of 2400 mm. The PR-001 has a different shaped profile and different mounting geometry, but its size range includes 3000 mm and longer options. Therefore, first measure the actual handrail line, then choose the profile, mounting, and finish.

Below is a practical verification procedure: how to distinguish floor length from an inclined line, when the PR-004 is truly suitable, when 2400 mm will be too short, how to correctly compare the PR-004 with the PR-001, and what to consider for mounting, finishing, and transportation before placing an order.

Stair Handrail PR-004

from 71.56 $

Go to Catalog

Round wooden handrail PR-004: what is actually stated in the product card

The PR-004 is a round wooden handrail for stairs. The current product card specifies the size 2400 × 50 mm. Materials are beech and oak. Sanding quality is "Prestige". The selected gluing quality is "for enamel". Production is made to order; the average manufacturing time in the card is stated as 5–10 days.

After checking the geometry, you can buy round wooden handrail PR-004 50 mm. But first, it needs to be proven that the actual installation line is not longer than the available 2400-mm product, or that the project provides for a separate section where PR-004 is indeed used as an independent part.

Watch video ...

Why the floor length of the staircase is not equal to the length of the wooden handrail

The staircase can be measured in at least four different ways, and these values cannot be mixed.

Our factory also produces:

Molded decor NPU-190

from 8.28 $

Wooden bracket KR-039

from 14.89 $

Decor Set C-032

from 89.93 $

Wooden Decor N-375

from 15.61 $

Wooden decor N-296R

from 15.25 $

Decoration Set C-001-2-1

from 461.65 $

Sopp HL-042M Furniture Handle

from 18.49 $

Wood Molding MLD-056

from 6.96 $

View Full Product Catalog

Horizontal projection

This is the distance on the floor from the beginning to the end of the flight in plan. In our example, it is 2400 mm. This is the figure most often obtained by a buyer with a tape measure when measuring the space between the lower and upper points of the staircase horizontally.

Lifting height

This is the vertical level difference. In the example, it is 1800 mm. It is not added directly to the horizontal length but is used in calculating the diagonal.

Inclined length of the flight

For a straight flight without breaks, this is the hypotenuse of a right triangle. It is closest to the geometric line along which the handrail runs. In the example, it comes to 3000 mm.

Actual handrail installation line

It may differ even from a simple diagonal. Reasons: the handrail does not start exactly above the first step, does not end exactly above the last step, has a horizontal extension, connects to a landing, or approaches a post/wall at a different point. Therefore, the 3000 mm calculation is a good preliminary test but not the final installation dimension.

The main mistake is taking the 2400 mm horizontal projection and comparing it with PR-004's 2400 mm. The numbers are the same, but they refer to different lines.

How to calculate the handrail for a staircase before purchasing PR-004

For a straight flight, the formula is used:

L = √(a² + h²),

Where:

• L — inclined length;
• a — horizontal projection;
• h — lift height.

For 2400 × 1800 mm:

L = √(2400² + 1800²) = 3000 mm.

This combination has particularly convenient geometry: the side ratio 2400:1800:3000 corresponds to the 4:3:5 triple, scaled by 600. Therefore, the result is exactly 3000 mm.

Difference between PR‑004 and the calculated line:

3000 − 2400 = 600 mm.

That is, the round handrail is 600 mm shorter than the pre-calculated inclined section. This is no longer a small measurement error that can be compensated by bracket placement. If a single continuous element is needed, PR‑004 is not suitable in length for this scenario.

Calculator for other straight flights: how to quickly check PR‑004

The same method can be applied to any straight flight if the horizontal projection and height are known.

This table shows an important thing: even when the horizontal projection is noticeably less than 2400 mm, the sloped line can approach the product length. Therefore, the final decision is always checked against two coordinates — horizontal and rise.

When a round handrail PR‑004 with a length of 2400 mm is truly suitable

PR‑004 is suitable not only for a staircase with a "length of 2400 mm". More precise conditions are needed.

The actual installation line does not exceed the product length

If after calculation and final marking the section fits within 2400 mm, taking into account the selected start and end points, PR‑004 can be used as a single piece. With a tight fit, you cannot buy "flush" until the fasteners and end finishing are confirmed.

The handrail is used on a separate straight section

Even if the entire staircase is longer than 2400 mm, PR‑004 can work on one local segment — for example, on a separate straight flight or a wall-mounted section. You just need to understand where the specific part starts and ends.

The project does not require continuous horizontal extension

If after an inclined flight the handrail must also pass along the landing, this extension increases the required length. PR-004 is suitable when it is either absent or solved as a separate part and a separate assembly.

Mounting points are already defined

Brackets or another support system define the actual line. Until they are selected, the final handrail length should not be considered a closed issue.

The round shape of 50 mm matches the design and installation

PR-004 cannot be chosen just because it fits in length. The round profile of 50 mm is a separate structural and visual solution. If the staircase system is designed for a shaped handrail with a sub-rail plate, PR-004 is not a direct replacement.

When a wooden handrail of 2400 mm turns out to be short

A lack of length usually appears not because the buyer made a mistake by a few millimeters, but because they measured a different geometric line.

2400 mm measured along the floor

This is the main scenario of the article. A horizontal projection of 2400 mm with any non-zero rise gives an inclined length greater than 2400 mm. The higher the flight, the greater the difference.

Length calculated along the steps

Sometimes the width of treads is added up or the edge of a flight of stairs is measured along a stepped path. Such a sum does not equal the straight line of the handrail. Geometry between the start and end points of the handrail itself is needed.

The landing is not taken into account

If the handrail continues horizontally on the upper landing after the inclined section, a separate segment is added to the inclined length. For example, 2200 mm along the slope + 400 mm along the landing already gives 2600 mm without considering the connecting joint.

There is an extension to a wall or a post

The handrail may extend beyond the geometric limit of the flight for ease of grip or connect to a structural element away from the last step. Such an extension must be specified in the project, not added as "approximately 100 mm" after purchase.

One handrail must pass through several sections

A straight flight, a turn, and the next flight cannot be reduced to a single diagonal. For each section, its own line is constructed, and connections are considered separately.

How to measure the actual handrail line on an already finished staircase

If the staircase is already installed, the theoretical formula is useful only as a preliminary check. For ordering, it is better to obtain the actual line.

First, determine the intended height and position of the handrail according to the railing project. Then mark the start and end of the straight section. Between these points, stretch a cord or use laser marking in the plane where the handrail axis will pass. It is this inclined line that is measured.

If there is a landing, turn, or horizontal continuation, each section is measured separately. You cannot stretch one tape measure along a broken line and count the resulting sum as the length of one straight part if a connecting joint is needed at the break point.

For a responsible stair railing, the final layout of fasteners and connections must be checked by a specialist. The handrail is involved in the safe use of the stairs, so dimensions cannot be selected based only on an interior photo.

PR-004 or PR-001: which wooden handrail to order

PR-001 is useful in this article as an alternative in length, but not as an extended version of PR-004. The products have different profiles and different mounting systems.

If the calculation shows exactly 3000 mm, technically the PR‑001 range includes a 3000 mm option. It is possible to order a wooden handrail PR‑001 with a length of 3000 mm, but only if the shaped profile 86 × 67 × 60 mm and its mounting system fit the project.

One cannot reason like this: “PR‑004 is short, so I’ll take PR‑001 of the same shape, just 3000 mm.” The shapes are different. If the interior requires exactly a 50 mm round grip, switching to PR‑001 changes not only the length, but also the appearance, grip, fit, connections, and components.

Why PR‑001 with a length of 3000 mm is not an automatic solution for a 3000 mm flight

Matching numbers also need to be read carefully. In our geometric example, the inclined line is exactly 3000 mm. If the actual start and end points of the handrail coincide with the ends of this diagonal, the length seems ideal. But in a real project, extensions, end treatments, connections, or mounting nodes may appear.

In addition, PR‑001 is a profile for a different type of stair railing. It is supplied separately with a sub-rail plate PR‑003 when used in the corresponding system with balusters. This means that before ordering, the entire assembly needs to be checked, not just the length.

Sub-rail plate PR‑003: when it applies to the project

PR‑003 is used in stair railing structures as a sub-handrail: the upper ends of the balusters are fixed to the plate, and the corresponding handrail is installed on top. In the PR‑001 card, the plate is listed as an additional element.

You can buy a handrail bracket PR-003, if the project is really built on such a system. But you cannot automatically add PR-003 to the round PR-004 just because both products are in the handrail section.

First, the type of railing is determined: a wall-mounted separate grab, a handrail on balusters, a curved system, or another structural option. After that, the set is assembled.

Round handrail made of beech or oak: what to buy for the chosen finish

PR-004 is made of beech and oak. Both species are suitable for high-quality wooden products, but they behave differently visually.

Beech

Beech has a dense, relatively calm, and non-porous structure. It is convenient for opaque finishes and projects where the wood grain should not dominate.

Oak

Oak has a more pronounced porous texture. With a transparent or semi-transparent finish, the grain becomes a noticeable part of the handrail.

But the PR-004 card in the selected configuration shows the quality of finger jointing "for enamel". This means that the product is basically oriented towards an opaque coating. If the handrail should be tinted, coated with a clear varnish, or oil with a visible texture, you need to separately check the available configuration for such a finish.

Before choosing the wood species, it is useful to check the quality of wooden products and preparation optionsThis is especially important if the handrail needs to match the tone of the steps, balusters, or posts.

Why you shouldn't choose oak just because the steps are oak

The name of the wood species does not guarantee a visual match. Oak from different batches differs in grain and shade, and staining, varnish, and oil change the color. If the staircase is already finished, you need a sample or a test stain.

The same applies to beech. If the handrail will be painted with white enamel, the match of the wood species with the steps may not matter visually at all, and the quality of the paint and a uniform color will become more important.

What to order together with a wooden handrail

The handrail itself does not describe the entire staircase assembly. Depending on the project, the following may be required:

• support or sub-rail system;
• wall brackets;
• Balusters and posts;
• connecting elements;
• end finishing;
• fastening to the base;
• materials for priming and finishing;
• shipping packaging.

You cannot write that these elements are included in the PR-004 kit: the card does not confirm this. Their composition is determined by the scheme of a specific staircase.

If a system with balusters and a shaped handrail is required, the components section helps select compatible elements. For a self-supporting round PR-004 on the wall, a different holder scheme will be needed.

How to choose fasteners before buying a handrail

Fasteners affect the actual start and end points. If the bracket moves the handrail away from the wall, the spatial line changes. If the outermost holder cannot be placed at the very end due to the wall base, the working section also changes.

Therefore, it is more correct to first determine:

1. where the handrail axis runs;
2. to which base it is attached;
3. how many reference points are provided by the project;
4. how the beginning and end are formatted;
5. is there a horizontal continuation.

Only after this does the 2400 mm length become a full-fledged selection parameter.

Why PR-004 transportation needs to be approved before payment

PR-004 is a long item of 2400 mm. The card separately recommends a paid pine backing, since the profile is transported in a lying position. This is not a minor detail: a long wooden element is sensitive to improper transportation and point loads.

Before ordering, you need to understand how the handrail will travel to the site, whether the packaging will fit into the vehicle, and whether the 2400-millimeter profile can be carried up stairs, through an elevator, vestibule, and turns.

If the handrail is shipped by a transport company, a rigid backing helps maintain straightness and protect the profile. Do not refuse it just to reduce the package size without discussing the consequences with the seller.

Before payment, it is useful to check the delivery conditions for long items and coordinate the packaging along with the rest of the stair components.

How to calculate a handrail if there is a horizontal landing after the flight

The landing is one of the most common sources of missing length. The buyer correctly calculates the inclined section, gets, for example, 2200 mm, and sees that PR-004 2400 mm is formally longer. But then it turns out that the handrail must continue another 300-400 mm horizontally.

In such a project, you cannot simply add two lengths and decide that one straight piece should bend at the transition point. You need to determine the structural joint between the inclined and horizontal sections.

For a preliminary estimate, you can write:

total line length = inclined section + horizontal continuation.

For example:

2200 + 350 = 2550 mm.

PR-004 2400 mm is already insufficient in total length. But even a 2600 mm product does not become an automatic solution, because a change in direction is required. You need to understand whether a connecting element, a separate horizontal piece, or another joint is used.

How to calculate a handrail on a staircase with a turn

A turning staircase does not have a single inclined line. If there are two flights and an intermediate landing, each section is measured separately:

• inclined line of the first flight;
• horizontal or turning section of the platform;
• inclined line of the second flight;
• end extensions, if provided.

For each straight flight, you can use the Pythagorean formula. For example, the first flight has a horizontal of 1800 mm and a rise of 1200 mm:

√(1800² + 1200²) ≈ 2163 mm.

The second flight — horizontal 1600 mm and rise 1200 mm:

√(1600² + 1200²) = 2000 mm.

These are two different straight parts or two sections of the system. You cannot say: “you need 4163 mm of railing in total” and buy one 4500-millimeter profile without figuring out the transition at the platform. The geometry of the joint is more important than the total sum.

How to check PR‑004 for the maximum allowable line without a complex calculator

If the railing has a length of 2400 mm, you can solve the inverse problem: with a known rise height, determine what maximum horizontal projection will give a diagonal of 2400 mm.

Formula:

a = √(L² − h²).

For example, with a rise of 1200 mm and a maximum length of 2400 mm:

a = √(2400² − 1200²) = √(5,760,000 − 1,440,000) = √4,320,000 ≈ 2078 mm.

That is, with a vertical rise of 1200 mm, the horizontal projection of the straight section should be approximately no more than 2078 mm so that the net diagonal does not exceed 2400 mm. The actual line may require additional allowance depending on the start and end points.

With a rise of 1500 mm:

a = √(2400² − 1500²) ≈ 1874 mm.

The greater the rise, the smaller the horizontal projection a handrail of fixed length can cover.

Why the length cannot be determined by the number of steps

The number of steps by itself does not give the handrail length. Two staircases with 12 steps each can have different riser heights and different tread depths. Consequently, they will have different horizontal projections, rise heights, and angles of inclination.

Even if the depth of one tread is known, multiplying by the number of steps can yield an inaccurate result due to the upper landing and how the last step is counted. It is more reliable to measure the total horizontal projection between the design points and the total height.

For a preliminary check, the dimensions of the stair opening can be used, but the final handrail line must be tied to the actual structure.

How to verify the 3000 mm calculation directly on site

In the example of 2400 × 1800 mm, the math gives exactly 3000 mm. On the finished staircase, it is useful to physically verify this value.

1. Mark the design starting point of the handrail on the wall or railing.
2. Mark the end point of the inclined section.
3. Stretch a cord between them strictly along the future line.
4. Measure the cord with a tape measure.
5. Compare the result with the calculated 3000 mm.

If you get, for example, 3070 mm, it means the actual points differ from the idealized 2400 × 1800 geometry. The cause could be extension beyond the steps, a height offset, or a different position of the start/end. It is the actual value that should be used for the order.

If the result is 2940 mm, you also don't need to automatically cut the 3000 mm handrail in advance. First, confirm the end treatment and fastenings.

Why PR-004 cannot be extended 'butt-joint' without a design joint

If one PR-004 2400 mm is too short, the obvious idea is to buy two and join them. But a handrail is an element that a person holds onto and leans on. The joint should not be a random gluing of two ends in place.

You need to determine:

• where the joint will be located;
• what connecting node it is made with;
• whether there is a support mounting nearby;
• how the coaxiality of the round profile is ensured;
• whether the joint creates a step or a sharp transition;
• how it works under operational load.

If a single long handrail without a visible joint is required, it is better to immediately choose a product of suitable length and profile than to design an untested connection of two PR-004s.

Round profile 50 mm: why length is not the only criterion

PR-004 has a round diameter of 50 mm. This shape is perceived differently than the shaped profile PR-001. A round handrail is convenient to use as an independent grip line, especially on the wall side of a staircase or in a minimalist interior.

The shaped PR-001 is wider and taller, has flat/profiled zones, and is designed for a different railing system. Therefore, they cannot be compared only by length "2400 versus 3000."

Before replacing one model with another, check:

• the shape of the grip;
• the method of attachment to the wall or balusters;
• the presence of a sub-rail strip;
• the position relative to the posts;
• end connections;
• the visual scale on the staircase.

How to choose between a solid handrail and multiple sections

Sometimes the design allows dividing the line into independent sections. For example, PR-004 2400 mm is used on an inclined flight of 2200 mm, and the landing gets a separate horizontal handrail of 500 mm. This can be logical if the structure provides for a neat transition.

In a different interior, a continuous line without a break or visible joint is required. Then two separate sections do not meet the design objective.

The solution depends on the staircase architecture. One cannot declare a one-piece option always more correct and a composite one always worse. But joints must be designed in advance.

How to account for the end sections of the handrail

The handrail may start and end exactly within the flight, or it may continue further. Such continuation should not be assigned arbitrarily — it is determined by the staircase design and the requirements of the specific project.

For the estimate, it is useful to separate:

• the main inclined length;
• the lower end section;
• the upper end section;
• the horizontal extension;
• connection zones.

If the clear diagonal is already 3000 mm, any additional extension makes the required length even longer. Therefore, PR-004 2400 mm in the example is excluded as a solid piece before even discussing the ends.

How to prepare a handrail for finishing

PR-004 in the selected card has a grinding quality of "Prestige" and re-gluing for enamel. This does not mean that the product can be immediately coated with any compound without preparation. Before finishing, check the surface, storage conditions after delivery, absence of damage, and the requirements of the manufacturer of the chosen paint or varnish.

If an opaque enamel is used, the task aligns with the basic logic of re-gluing. If the customer wants a transparent coating, oil, or tinting, you need to check in advance whether a suitable handrail configuration is available. Otherwise, the difference in lamellas, insignificant under enamel, may become noticeable.

Before starting work, it is useful study tips on finishing wooden products, but the specific system of primer, enamel, stain, oil, or varnish must be applied according to the technical instructions of the coating manufacturer.

When to finish the handrail: before installation or after

Both scenarios are possible, but the choice affects the technology.

Finishing before installation

It is convenient to evenly treat a round profile on all sides without staining the wall and steps. But the installer must work carefully to avoid damaging the finished coating during drilling and fastening.

Finishing after installation

The handrail is already in its final position, but it is harder to paint the underside near the brackets and protect the interior. For transparent coatings, the attachment points and ends also need to be planned in advance.

If the handrail is to be cut to actual length on site, final end finishing is usually done after fitting.

Mistakes when buying a round wooden handrail

Mistake 1. Measuring only the length of the stairs along the floor

The buyer receives 2400 mm and orders PR‑004 2400 mm. With a rise of 1800 mm, the actual diagonal is 3000 mm. Prevention — always measure the horizontal and vertical.

Mistake 2. Taking the horizontal projection as the inclined line

Even without a complex staircase, these values are equal only at zero rise. On a real flight, the diagonal is longer.

Mistake 3. Not accounting for the landing

The inclined part fits in length, but the horizontal extension goes beyond the product limit. Solution — calculate the sections separately.

Mistake 4. Buying the handrail before choosing the brackets

Brackets and connection points determine the actual installation line. Without them, the final size remains conditional.

Error 5. Considering PR-001 a long version of PR-004

PR-001 has a different shaped profile 86 × 67 × 60 mm and a different system. A length of 3000 mm does not make it geometrically identical to the round PR-004.

Error 6. Not checking the shape and cross-section

The handrail may fit in length, but not fit the balusters, posts, or wall brackets.

Error 7. Ordering "for enamel" for a transparent coating without checking

The glue-up is designed for an opaque finish. For visible wood grain, a suitable preparation option is required.

Error 8. Forgetting about the transport backing

The 2400-mm profile requires careful transportation. The card separately recommends a pine backing for horizontal transport.

Error 9. Joining two PR-004 with a random joint

The handrail joint is a structural node, not just a way to add the missing 600 mm. It should be designed by a specialist.

Error 10. Designing a responsible railing independently without verification

Size and appearance are only part of the task. The mounting, connections, and load-bearing elements of the stair railing must be checked by a competent specialist for the specific site.

Who PR-004 suits, and who should choose a different solution

PR-004 is suitable if:

• a round wooden handrail with a diameter of 50 mm is needed;
• the actual straight section fits within a length of 2400 mm;
• the project allows a separate handrail without a mandatory continuation;
• a compatible system of wall brackets or other mounting is selected;
• beech or oak matches the finishing task;
• delivery of the long-length product is arranged in advance.

Another option should be considered if:

• the installation line is longer than 2400 mm and a single solid element is needed;
• a shaped profile is required;
• the handrail is part of a railing with a sub-rail plank of a different geometry;
• the staircase has turns and a continuous complex connection;
• a continuation along the landing is needed;
• mounts for the round profile are not coordinated;
• the design requires a different scale or grip shape.

How to understand whether PR‑001 is needed instead of PR‑004 in the 3000 mm example

For a flight of 2400 × 1800 mm, the calculated diagonal is 3000 mm. This is a reason to open the PR‑001 card, because it has a 3000 mm long option. But the decision is made based on three filters.

Filter 1. Shape

If the project requires a specifically round handrail of 50 mm, PR-001 is not suitable as a visual equivalent. You need to look for another solution with the required shape and length.

Filter 2. Mounting system

If the handrail is installed on balusters and the project is designed for a shaped profile with PR-003, PR-001 may be appropriate. If a wall-mounted round grip is needed, that is a different scenario.

Filter 3. Actual length

After marking, it may turn out that you need not exactly 3000, but 3070 or 3150 mm. Then the PR-001 3000 mm option will also be too short, and the next length or a different scheme will be required.

What to check for PR-001 with a length of 3000 mm before ordering

PR-001 with a length of 3000 mm has the same shaped profile of 86 × 67 × 60 mm as other lengths in the line. The material is beech or oak, with "Prestige" sanding quality, glued for enamel coating.

Lengths over 2500 mm are described by the manufacturer as finger-jointed blanks. This is a design feature that needs to be considered if the client expects a solid-lamella appearance.

The sub-rail strip PR-003 is ordered separately. Therefore, the PR-001 3000 mm set is not "one handrail and that's it" if it is installed in a corresponding baluster system.

What to check in PR-003 before including it in the kit

PR-003 has dimensions of 1500, 2000, and 2500 mm with a cross-section of 60 × 6 mm. If the handrail PR-001 has a length of 3000 mm, one standard PR-003 2500 mm will not cover the entire length. Therefore, the under-rail system also needs to be calculated by sections and joints.

You cannot automatically order "one PR-003 per one PR-001" just by quantity. The lengths are different. For a 3000-mm handrail, the under-rail bar scheme must be designed separately.

How to calculate the order if you need two identical handrails on both sides of the flight

Sometimes a staircase has handrails on both sides. Then the length of one flight is not mechanically multiplied by two without checking: the left and right sides may have different start and end points due to a wall, post, doorway, or landing.

If both sides are truly symmetrical and each inclined line is 2200 mm, two PR-004 2400 mm may fit as separate elements. If one side continues on the landing by 400 mm, PR-004 is no longer sufficient for it, although the opposite side remains within limits.

Therefore, the specification is prepared separately:

• left side — actual length;
• right side — actual length;
• type of mounting;
• end finishing;
• Material and finish.

How to measure a handrail if the staircase has not been built yet

At the design stage, there are no real points on the wall, so a staircase drawing is used. The horizontal projection, height between levels, geometry of landings, and position of the railing are taken from it.

The Pythagorean calculation gives the length of the straight section. Then the designer adds constructive extensions according to the chosen system. After the staircase is installed, it is advisable to re-check the measurement before final ordering of a long-length product, if time permits.

If the handrail is ordered in advance together with the staircase, responsibility for the final length must be documented in the project documentation.

How to check the package dimensions before delivery

The handrail itself has a length of 2400 mm, but the shipping system may be larger. If a pine backing and additional protection are used, the actual cargo dimensions should be confirmed with the seller.

This is important for:

• elevator;
• stairwell;
• corridor turn;
• doors;
• car trunk;
• storage location before installation.

Do not assume that a 2400-mm wooden profile can safely bend during a skid. The route must be checked as for a rigid long-length product.

What to tell the manager before ordering PR-004

Such a data set allows discussing a specific section rather than an abstract request like “need a handrail for a 2.4-meter staircase.”

Where to buy a round wooden handrail PR-004

If the actual line of the straight section does not exceed 2400 mm and the round profile of 50 mm suits the project, PR‑004 can be ordered from the product card. For comparing other shapes and lengths, use the general railing section.

If the calculation shows 3000 mm and a curved railing for a baluster system is needed, PR‑001 3000 mm and PR‑003 can be considered separately. If a round shape is specifically required, PR‑001 should not be automatically substituted for it.

For broader staircase design, you can go to the section Components for wooden staircase and select posts, balusters, and other elements in one system.

Why the length of the stringer or string is not automatically equal to the length of the railing

In the staircase drawing, the dimension of the inclined load-bearing element—stringer or string—is often already present. It seems convenient to use it as a ready-made railing length. This can lead to an error because the railing passes above the steps and its endpoints do not necessarily coincide with the ends of the load-bearing part.

If the railing runs strictly parallel to the flight and starts/ends at the same vertical projections, the net inclined length may match the calculated diagonal. But as soon as the railing is extended before the first step, goes onto the landing, or connects to a post at a different point, the length changes.

Therefore, the stringer dimensions are useful for checking the angle of inclination, but they do not replace the design grip line. In the specification, it is better to store them separately: