The smooth decorative panel next to the slat wall is already assembled, painted, and fully satisfies the owner. The molding frame remains intact, but after moving furniture, renovation, or an accidental impact, one carved corner has chipped.

There is no point in completely redoing the panel because of one part if it is specifically the left-side corner element MLDPU-4U-2.1L that is damaged, the rest of the frame parts are intact, and the straight profile underneath it is not affected.

The current MLDPU-4U-2.1L has dimensions of 145 × 90 × 16 mm, is made of polyurethane, and currently costs 1,440 ₽ per piece. STAVROS sells products from a single piece, so a separate replacement of such an element is possible as an independent purchase.

But before ordering, you need to check not only the article number.

The main risk here is buying the right MLDPU-4U-2.1R instead of the left one, because determining the side only by the phrase "the left upper corner of the frame broke" is not enough. L and R refer to the direction of the decorative element itself. Official STAVROS kits use MLDPU-4U-2.1L and MLDPU-4U-2.1R as paired left-hand and right-hand parts of one system.

Therefore, the correct repair path looks like this:

take a photo of the old part → compare the pattern with L and R → check the dimensions 145 × 90 × 16 mm → determine whether the straight molding is intact → order only the actually damaged elements → dry-fit the replacement → restore the finish.

If only the MLDPU-4U-2.1L is broken, the base cost of the part is 1,440 ₽, not the price of a new complete decorative kit.

Polyurethane Molding MLDPU-4U-2.1L

from 17.57 $

Go to Catalog

MLDPU-4U-2.1L: what exactly needs to be checked before reordering

MLDPU-4U-2.1L belongs to polyurethane decor for moldings. The current card confirms the dimensions 145 × 90 × 16 mm, the material polyurethane, the price of 1,440 ₽, and an average production time of 3–7 days to order.

Card:

buy left corner element MLDPU-4U-2.1L

The size itself is useful here primarily as an identifier of the old part.

If the panel was made long ago, do not order a replacement just because the pattern in the photo seems similar. First measure the removed or preserved corner.

Check:

• overall long dimension;
• short dimension;
• maximum relief;
• curl character;
• direction of the ornament;
• the place where the part is applied to straight sections of the molding.

If the old element really matches 145 × 90 × 16 mm and the pattern matches MLDPU-4U-2.1L, the probability of correct identification is significantly higher.

For repairing an already finished panel, this is more useful than trying to recall the collection name from memory.

Watch video ...

"The left corner of the frame is damaged" does not yet mean that the L article number is needed.

This is the most important check in the entire article.

The system has a separate MLDPU-4U-2.1R of the same size 145 × 90 × 16 mm and at the same current price of 1,440 ₽. The official card of the right version directly calls it the right corner element, and ready-made STAVROS kits show L and R as paired parts.

Right product:

order the right corner element MLDPU-4U-2.1R

The error occurs due to the mixing of two concepts:

the position of the corner on the wall

и

direction of the ornament of the part.

For example, a person looks at the panel and sees damage on the top left. They automatically search for a product with the letter L.

But the original frame could have been assembled with a different orientation of decorative elements. Additionally, when viewing a photo, mirror image, or an already disassembled part, it is easy to confuse the direction.

Our factory also produces:

Wooden Bracket KR-027

from 55.14 $

Wooden Molding K-058

from 53.80 $

Polyurethane molding NPU-408

from 30.25 $

Wooden Decor N-430L

from 17.44 $

View Full Product Catalog

How to check correctly

Do not start with letters.

Place images side by side:

MLDPU-4U-2.1L

и

MLDPU-4U-2.1R.

Now compare with the undamaged symmetrical corner of your panel.

It is better to focus not on the overall silhouette, but on specific details of the pattern:

• where the main curl develops;
• on which side the longer part of the ornament is located;
• how the decorative line meets the horizontal molding;
• how it connects with the vertical profile.

If the opposite corner has survived, it becomes the best reference.

In a paired composition, it is the undamaged piece that helps understand which version is needed to restore symmetry.

Do not throw away the broken corner until you buy a new one

Even a heavily damaged old piece is useful as a physical template.

Using it, you can check:

1. the actual size;
2. orientation of the pattern;
3. depth of the relief;
4. molding overlap area;
5. shape of the back surface;
6. old paint and texture.

Fragments preserved at the junction with a straight profile are especially useful.

If you order a new part without having the old sample, and after delivery discover a mismatch, diagnostics become more complicated: it is unclear whether the error was in L/R, in the part number, or the original frame was assembled from a different series.

Therefore, until the repair is completed, it is better to keep the old MLDPU-4U-2.1L entirely, even if it has split into several pieces.

The corner is damaged, but first check the molding underneath it

Corner decor is only one layer of the frame system.

The official page of the right MLDPU-4U-2.1R describes the 004 series system as a combination of straight molding and paired corner pieces, and the MLDPU-004 is currently 15 × 8 × 2600 mm in size and priced at 3,190 ₽ per strip.

Link:

buy MLDPU-004 polyurethane molding

After an impact, the carved corner is most noticeable externally, but underneath it there may be:

• crack in the straight profile;
• molding peeling off the wall;
• a damaged corner joint;
• a dent;
• a coating chip;
• displacement of one of the strips.

If you place a new decorative corner over an already separated base, you get a cosmetic repair over an unresolved problem.

Therefore, first take measurements and inspect the frame under side lighting.

Run your finger along the horizontal and vertical profiles near the damage. If you feel a step or one section has come away from the plane, first restore the geometry of the straight molding.

Three repair scenarios give three different baskets

It is convenient to determine the main purchase not by the appearance of the chip, but by the depth of the damage.

If one MLDPU-4U-2.1L is required, the cost of the part is:

1 440 ₽.

If a new polyurethane MLDPU-004 strip is also really required:

1 440 + 3 190 = 4 630 ₽.

This amount applies only to the two specified items at current prices and does not include finishing or installation materials.

But there is another important check: not every existing frame with such an angle is necessarily assembled from polyurethane MLDPU-004.

Do not buy MLDPU-004 automatically: in finished systems, the same corner is also found with MLD-004-MG

This is useful to know specifically when repairing an existing interior.

Official kits "Brussels", "Ekateringof" and other STAVROS systems use MLDPU-4U-2.1L/R together with a primed straight molding MLD-004-MG.

And the card for the right corner element describes a wider series:

• MLDPU-004;
• MLD-004-MG;
• MLDPU-4U-2.1L;
• MLDPU-4U-2.1R;
• other coordinated elements of the system.

Therefore, if the straight profile is also damaged, first determine the material and exact article number of the already installed strip.

This is critical.

Externally, after painting, two profiles of the same geometry may look very similar. But during local repair, you cannot judge the material by eye.

Algorithm:

1. find the documents from the original order, if they have been preserved;
2. check the markings on the remnants;
3. compare the cross-section;
4. clarify the material;
5. only then buy the straight profile.

If only the polyurethane corner element is damaged, this issue does not require purchasing a new molding at all.

When one MLDPU-4U-2.1L for 1,440 ₽ is enough

Local replacement makes sense when several conditions are met simultaneously.

The remaining corners are intact.

There is no reason to replace undamaged paired elements just to have everything new.

The straight moldings have retained their geometry.

They have not cracked or shifted.

The article number of the old corner has been determined precisely.

The size and pattern match the MLDPU-4U-2.1L.

The color difference can be eliminated with a finishing coat.

The new part must be visually integrated into the existing frame.

There is no hidden damage to the base.

The wall or panel behind the decor remains suitable for local repair.

Under these conditions, purchasing a full ready-made set just for one chipped corner would indeed be excessive.

The MLDPU-4U-2.1L card exists as a standalone product item, and STAVROS specifies a minimum shipment of products from one piece.

When one new overlay is no longer enough

A local chip and a destroyed corner joint are different situations.

One MLDPU-4U-2.1L may not be enough if:

• the straight molding underneath it is cracked;
• both frame strips have come away from the wall;
• the corner of the panel itself is destroyed;
• the base has lost its strength;
• the frame geometry has been changed;
• several decorative elements need to be restored;
• the old system was redone and the standard part no longer matches the current arrangement of profiles.

In this case, the problem is not solved by the rule:

"glue a new corner over the damage."

First, the base and straight lines are restored.

Only after that does the decorative element return to its place.

Otherwise, the new part may immediately show the existing offset: one of its edges will match the molding, the other will not.

How to remove a damaged element without turning a local repair into a redo of the entire frame

Here, haste is the most dangerous thing.

Do not pry the corner with a screwdriver and sharply tear it off the wall. It is unknown what compound was used for the initial installation and how firmly the finish layer of the base holds.

First, determine how the decorative part interacts with adjacent materials.

Check:

• whether a layer of paint runs along the perimeter;
• is there a filled seam;
• does the overlay lie only on the molding or partially on the wall;
• whether the finish nearby is damaged;
• whether the piece itself is loose.

If the MLDPU-4U-2.1L is cracked, it is sometimes safer to work with it in parts than to try to remove it whole in one pull.

The main task of dismantling is to preserve:

The exact removal technique depends on the adhesive and substrate used during the initial installation. If this is unknown, a universal method with a specific temperature, solvent, or force cannot be invented.

The exact removal technique depends on the adhesive and substrate used during the initial installation. If this is unknown, a universal method with a specific temperature, solvent, or force cannot be invented.

After removing the old corner, do not rush to glue a new one

Look at:

Look at:

Condition of the base

The position of the two moldings

The position of the two moldings

Traces of old glue

Traces of old adhesive

Large protrusions may prevent a new part from seating at the previous level.

Installation point

It is useful to trace the outline of the old corner before completely removing traces — if possible and it will not damage the finish.

Symmetry with the opposite side

Measure the position of the intact paired corner relative to the frame and transfer the corresponding geometry to the area being repaired.

This way, the new element does not have to be positioned "by eye."

Dry fitting is more important than immediate gluing

The new MLDPU-4U-2.1L is first applied without glue.

Check four things.

Pattern match

It must match the remaining frame elements.

Fit on profiles

The decorative corner should take a logical position relative to the straight planks.

Relief height

The new part should not create an unexpected step relative to the paired corner.

Position relative to the entire frame

Step away from the wall.

From a distance, it is sometimes easier to notice a misalignment than when examining the element at 20 centimeters.

If the dry fit raises doubt, installation must be stopped.

Glue will not fix an incorrect SKU or wrong L/R orientation.

How to use the entire opposite corner as an installation reference

This is one of the advantages of local repair of a symmetrical frame.

You do not need to restore the position solely based on the catalog photo.

The undamaged side already shows:

• indent;
• rotation angle;
• position of the long part;
• connection of the ornament with the horizontal;
• connection with the vertical;
• depth relative to the frame plane.

You can take several control measurements.

For example:

from the inner line of the molding to the extreme point of the decor;

from the corner joint to the end of the ornament;

position of the element relative to the horizontal axis.

The main thing is to compare mirror-corresponding points, not identical L and R sides as if the parts were identical.

This approach is more accurate than trying to reconstruct the position from a photo on the internet.

What to do if the new corner matches the article number but seems slightly different

First, rule out simple causes.

The new and old elements have different coloring

Color and gloss greatly change the perception of relief.

The old decor has been painted multiple times

Several layers of coating can visually soften fine details.

The new element is lit differently

In the corner next to the slat panels, side light can enhance the difference.

The old corner has been repaired before

Its relief may already be partially altered by putty or manual finishing.

Indeed, the other side has been ordered.

This is verified by comparing the pattern.

Do not begin mechanically reworking the new MLDPU-4U-2.1L until it is confirmed that the part number and orientation are correct.

Is it necessary to replace the paired whole corner for the sake of the same "age"

Usually not.

If the existing part:

• is not damaged;
• holds securely;
• retains the pattern;
• can be brought to a uniform finish,

replacing the second corner provides no independent technical benefit.

Buying a pair may be justified in another case: if after trying it on it turns out that the old elements differ noticeably from the current product, or the original frame is assembled from a different version altogether.

Then it is better to first understand the reason for the difference.

But replacing a functional part solely because one of the two is new is an unnecessary increase in the cart.

Painting is the main visual stage of a local replacement

Even an MLDPU-4U-2.1L that perfectly matches in shape will look alien if its finish differs from the rest of the frame.

Before finishing, compare:

• color;
• gloss level;
• the surface texture;
• the patina, if any;
• the shade of the molding;
• the condition of the adjacent wall.

Matching the old color locally can be trickier than it seems.

White paint from five years ago and new "same white" may differ due to:

• aging of the coating;
• batch;
• lighting;
• contamination;
• a different number of layers.

Therefore, sometimes it is neater to repaint not just a small new corner, but a logically whole fragment of the frame — for example, the entire corresponding corner unit.

But this is already a decision for a specific finish, not a mandatory rule for MLDPU-4U-2.1L.

Slat panels near the panel need to be protected during renovation

In the interior in question, the decorative frame is located next to the slat accent wall.

This creates an additional practical task: local repair of the molding should not damage the adjacent finish.

Especially when:

• dismantling the old corner;
• sanding;
• touch-up painting;
• dust removal;
• working with glue.

If there is a small gap between the frame and the slats, it is better to cover them before starting work.

This does not affect the choice of MLDPU-4U-2.1L, but it does affect the final result of the repair: there is no point in perfectly restoring one corner while simultaneously dirtying or scratching the finished slatted surface.

If slatted panels are needed for another project, see the corresponding catalog:

Buy slatted panels for wall finishing

In the current repair, there is, of course, no need to buy additional panels if they are not damaged.

How to understand whether it is worth repairing a chip or whether it is easier to replace the entire MLDPU-4U-2.1L

Not every defect requires a new part.

Minor surface damage and a destroyed ornament are different cases.

You can first assess local repair if

• the chip is small;
• the main contours of the ornament are preserved;
• the missing area does not form an important part of the pattern;
• the overlay itself holds firmly;
• there is no crack through the entire part.

Replacement is more logical if

• a large fragment of the ornament is lost;
• the element is split;
• several protruding parts are destroyed;
• the part has peeled off along with damage;
• the geometry actually has to be modeled from scratch.

Here you need to consider the price of the new part — 1,440 ₽.

If restoring a severely damaged overlay requires lengthy manual reconstruction, purchasing a new separate SKU may be simpler in terms of outcome and labor costs.

But the choice depends on the condition of the specific corner and the cost of the craftsman's work.

Why you shouldn't buy an entire CPU kit just for one damaged corner

MLDPU-4U-2.1L is included in several ready-made decorative STAVROS systems. For example, it is present in the Brussels, Yekateringof, and Verona sets.

But belonging to a set does not mean that if one element is damaged, you need to buy the entire system again.

MLDPU-4U-2.1L has its own product page and its own price.

Therefore, if:

• the old SKU is determined exactly;
• you specifically need the L version;
• the remaining parts are intact,

A rational basket starts with one MLDPU-4U-2.1L.

A full set is needed when a new panel is created or the entire decorative system is changed.

This is a different purchasing task.

Checking the old composition against the set can help find a lost article number

There is also a reverse benefit from ready-made systems.

Suppose there are no documents from the old renovation.

You only remember that the panel was purchased as a ready-made composition.

Then it can be compared with the compositions of existing STAVROS kits.

For example, CPU-9-1 "Brussels" contains MLDPU-4U-2.1L/R and a whole set of other recognizable elements. CPU-11-2 "Yekateringof" also uses this pair of corners.

If several positions match on your wall, this becomes additional confirmation that the corner belongs to the desired series.

But the set itself is used here only as a reference for identification, not as a mandatory new purchase.

How many to buy if two corners are damaged

Here you can't automatically write:

2 × MLDPU-4U-2.1L.

You need to determine the sides.

Options are possible:

If one left and one right element cost 1,440 ₽ each, two corner pieces will cost 2,880 ₽ at current prices.

With three or four damaged corners, it's worth asking a different question: why were so many elements affected at once?

If the cause is serious mechanical impact, the straight parts of the frame may also be damaged. Then simply multiplying the number of corners does not replace inspecting the entire composition.

When a spare second MLDPU-4U-2.1L makes sense, and when it doesn't

Since STAVROS ships products from a single unit, there is no mandatory need to take a spare second corner.

But a spare may be justified if:

• there are many identical panels at the site;
• several L-elements are in a mechanical risk zone;
• the entire composition is painted simultaneously;
• it is important to have an identical spare part for further operation.

For a single home frame without repeating elements, this is already a separate purchase "for the future," not a repair calculation.

Therefore, the article should not turn one damaged corner into an artificial sale of two or four.

Do I need to buy glue together with a new corner

The mounting compound is a separate material.

In the STAVROS KUDO HIGH TACK catalog, it currently costs 990 ₽, and the corresponding mounting materials are displayed next to products of the 004 series.

Link:

buy glue for installing moldings

But you don't need to automatically buy a new cartridge.

First, check:

• whether there is a suitable mounting compound left from previous work;
• is it compatible with the existing base;
• whether its shelf life has expired;
• what materials were used during the original installation.

For one small patch, the actual consumption is small relative to the full cartridge, but the exact amount cannot be calculated solely from the 145 × 90 mm dimension without considering the back surface and the application pattern.

When it is better to stop the repair and call a specialist

Self-local replacement is most understandable when the damage is obvious and limited.

It is more reasonable to hand the work over to a specialist if, after dismantling, the following is found:

• destroyed base;
• large crack in the wall;
• significantly detached frame;
• complex decorative painting;
• unknown old adhesive composition;
• valuable adjacent coatings;
• the impossibility of removing the corner without risking the entire composition.

The cost of the MLDPU-4U-2.1L itself in such a situation ceases to be the main factor.

The part costs 1,440 ₽, but careless removal can create repairs over a much larger area.

When you don't need to buy MLDPU-4U-2.1L

There are at least four cases.

R is damaged, not L

Then you need the MLDPU-4U-2.1R.

The defect is only in the paint finish

If the polyurethane relief is intact, replacing the part may be excessive.

The chip is minimal and repairable

First, local recovery is assessed.

The existing angle belongs to a different system

Similar size and classic pattern do not yet prove the article number.

The main goal of inspection before purchase is not to find a reason to order MLDPU-4U-2.1L, but to avoid an incorrect purchase.

What to buy for different inspection results

After diagnosis, the cart becomes very simple.

Option 1. Only the left corner is damaged

Buy additional MLDPU-4U-2.1L for frame repair

Quantity:

1 pc.

Cost:

1 440 ₽.

Option 2. It turned out that the right element is damaged

order the right corner element MLDPU-4U-2.1R

The quantity is determined by the number of damaged R-elements.

Option 3. The polyurethane straight profile was also affected

Additional Items:

buy MLDPU-004 polyurethane molding

Current size is 15 × 8 × 2600 mm, price is 3,190 ₽.

Option 4. It turned out that the existing frame uses a different base

Do not buy MLDPU-004 out of habit.

First, identify the old molding.

Final checklist before ordering one MLDPU-4U-2.1L

Before clicking "Buy," just go through one sequence.

1. Take a photo of the entire panel.
2. Take a close-up photo of the damage.
3. Do not throw away the old corner.
4. Measure it.
5. Check the dimension 145 × 90 × 16 mm.
6. Find the intact paired corner on the same frame.
7. Compare the direction of the ornament.
8. Open cards L and R simultaneously.
9. Confirm that the damaged one is exactly MLDPU-4U-2.1L.
10. Check the straight horizontal profile.
11. Check the straight vertical profile.
12. Make sure they have not pulled away from the wall.
13. Determine the actual type of straight molding.
14. Do not automatically buy MLDPU-004 if it is not damaged.
15. If damaged, verify that MLDPU-004 is actually installed, not MLD-004-MG.
16. Assess whether the old part can be carefully removed.
17. Protect adjacent slat panels and trim.
18. Prepare the area for a dry fit.
19. After receiving the new part, fit it without adhesive.
20. Compare with the opposite corner.
21. Check symmetry from a distance.
22. Only after a successful fitting proceed to installation.
23. Then restore the unified finish of the frame.

Result: can you buy only one damaged left corner

Yes — if the old element is indeed identified as MLDPU-4U-2.1L and the rest of the system is not damaged.

MLDPU-4U-2.1L currently measures 145 × 90 × 16 mm, is made of polyurethane, and costs 1,440 ₽. It is available as a separate product SKU, and STAVROS indicates shipping from one piece.

Therefore, replacing the entire decorative panel due to one chipped corner is not automatically required.

But before ordering, two checks must be made.

The first is L or R.

Do not rely only on the position of the damage on the wall. Compare the direction of the ornament with MLDPU-4U-2.1L and the mirrored MLDPU-4U-2.1R. In ready-made STAVROS systems, these positions are used as paired left-hand and right-hand elements.

The second is the condition and type of the straight molding.

If the profile is intact, there is no need to buy a new one.

If it is damaged and it is specifically polyurethane MLDPU-004, the current strip 15 × 8 × 2600 mm costs 3,190 ₽.

If the existing panel is assembled with MLD-004-MG, a different approach is needed: MLDPU-4U-2.1L is used with official ready-made compositions and this profile, so the base material must be verified before purchase.

The main buyer takeaway here is simple:

do not reorder the entire decorative system. First, determine the exact article number of the broken corner and the condition of the molding. If only MLDPU-4U-2.1L is damaged, basic repair starts with a single piece for 1,440 ₽.

To find another compatible solution, you can open the section polyurethane molding decor.

If you need to replace the straight profile itself or choose another frame system, the section is available of polyurethane moldings.

FAQ

What to do if the article number is not visible on the old part at all?

Compare the size, relief, direction of the pattern, and composition of the entire panel with the current cards. If the frame was purchased as a ready-made set, it is useful to identify the set itself by other preserved decorative elements.

Can MLDPU-4U-2.1L be used on a frame made of MLD-004-MG?

Such a combination does occur in ready-made STAVROS systems: for example, in the Brussels and Yekateringof sets, MLDPU-4U-2.1L/R are used together with MLD-004-MG. For repairing a specific old panel, you still need to verify the actually installed profile.

If the old corner is completely lost, how to determine L/R?

Use the undamaged corners of the same frame. From them, you can reconstruct the logic of alternating left-handed and right-handed elements and compare the pattern with the cards.

Can a wooden MLD-4U-2.1L be used instead of a polyurethane one?

It should not be considered an automatic replacement. The catalog includes wooden products of similar geometry, but this is a different material and a separate item. For local repair of an existing polyurethane system, it is more logical to preserve the original material, unless the project specifies otherwise.

What to do if the corner is intact but pulling away from the wall?

Then a new part may not be needed at all. First, you need to determine the cause of the detachment and the condition of the base. Replacing a functional corner will not solve the fastening problem.

Can a new corner be painted separately in advance and then glued on?

The possibility depends on the chosen finishing technology and the method of joint treatment. For an exact match with the old frame, it is useful to first do a dry fit and only then decide on the painting sequence.

What to do if a chip appeared after a furniture impact and the risk of recurrence remains?

Besides repair, it is worth eliminating the cause itself: change the position of the furniture or limit its contact with the wall. Otherwise, the new overlay will remain in the same risk zone.

Do I need to buy four new corners if the existing paint is very old?

Not necessarily. The difference in finish is resolved separately from the condition of the decor itself. First, find out whether the new and old elements can be brought to a uniform appearance without replacing functional parts.

Can I place MLDPU-4U-2.1L in a different spot on the frame than where the old one was installed?

This is no longer a repair, but a change in composition. Since L/R participate in a directional pattern, arbitrary rearrangement can disrupt symmetry.

What to do if the new part does not fit onto the old molding during a dry fit?

Do not glue it by force. You need to re-check the corner article number, the type of straight profile, remnants of old mounting material, and the frame geometry.

Can I order one left and one right corner at once as a spare?

It is possible if such a reserve is needed for several identical panels. But for repairing one damaged L-element, this is not a mandatory configuration.

If the damage is in the lower left corner, is L definitely needed?

No, the position "lower left" itself does not yet confirm the article letter. The side is determined by the actual direction of the ornament of the existing system.

What to do if the frame is damaged right next to the slat panel?

Before dismantling, protect the slats and check if there is space to work with the tool. If access is too tight, the risk of damaging the adjacent finished surface increases.

Can I keep a small fragment of the old corner to match the color?

Yes. The fragment is useful not only for identifying the shape, but also as a sample of the existing color and gloss level when matching the finish.

Where to buy MLDPU-4U-2.1L?

The product card is here:

left corner element MLDPU-4U-2.1L

At the time of checking, the official website shows 145 × 90 × 16 mm, polyurethane, and a price of 1,440 ₽.