Best Corner-Cut RV Bunk Mattress Replacements
The best corner-cut RV bunk mattresses include the Daspom 4.7 in Corner Angle Cut Bunk for a thicker corner-cut bunk, the ZAQYCM Made-to-Measure Angled Bunk for an odd-shaped bunk, and the Camping World Cozyway Curved Bunk for curved double-over-double bunks.
On this page (9 sections)
- The 6 best corner-cut RV bunk mattresses in detail
- Compare the six picks side by side
- How we picked these corner-cut bunk mattresses
- What a corner cut changes in an RV bunk
- Measure the corner cut before you compare sizes
- Thickness and guardrails come first on a top bunk
- Covers, trimming and keeping it in place
- Questions to ask before you order a custom or cut piece
- Which corner-cut bunk mattress to buy
Corner-cut bunks come in left and right versions, and the angled edge varies by floor plan, so a mattress that matches the overall size can still miss the corner. The six picks below cover fixed sizes near 73 x 50 and 74 x 51 in, a curved 50 x 74 in, a made-to-measure option and a plain rectangle.
Five of the six have an angled or curved corner. The sixth is a plain rectangle, which we include so you can see the difference.
Most bunk replacements are sold by length and width alone, so a corner-cut model asks you to check one more measurement than usual.
Our picks at a glance
-
1
Best for a thicker corner-cut bunkDaspom 4.7 in Corner Angle Cut Bunk
8.6/10 our score
See it on Amazon -
2
-
3
Best for curved double-over-double bunksCamping World Cozyway Curved Bunk, 50 x 74
8.0/10 our score
See it on Amazon
- 4
Check itKistrba 74 x 51 Corner-Cut RV Mattress
Best for a 74 in corner-cut bunk - 5
Check itKistrba 73 x 50 Right-Cut Corner Mattress
Best for a right-cut bunk near 73 x 50 in - 6
Check itFoamRush 3 in Bunk Replacement, 28 x 75
Best for a plain rectangular bunk
The 6 best corner-cut RV bunk mattresses in detail
Daspom 4.7 in Corner Angle Cut Bunk
- 73 x 50 in with a 21 in corner cut
- 4.7 in of high-density foam
- 30D memory foam over 30D support foam
- Outer cover removable for washing
A 21 in corner cut on a 73 x 50 in mattress, and at 4.7 in it is the thickest fixed size in this group. Check your bunk maker's thickness limit before you order.
Pros
- Clear 21 in corner cut and 73 x 50 in size
- Thickest fixed size in this group
- Outer cover comes off for the washer
Cons
- Few details beyond size, cut and foam layers
- 4.7 in may crowd the guardrail on a top bunk
Daspom has the clearest corner cut in this group: a 21 in angle on a 73 x 50 in mattress. Start here if your bunk is close to those numbers and you want more depth than the 3 in and 3.2 in options.
A 30D memory foam top sits over a 30D support base, which Daspom says keeps the mattress from bottoming out. Daspom calls the feel medium firm, and the outer cover comes off and runs through the washer on a gentle cycle.
Skip it if your bunk has a different cut, or if it's a top bunk where the extra 4.7 in would bring you too close to the guardrail. Measure from the platform to the rail and check the bunk maker's maximum thickness before you order.
It's 73 in long, so measure the full length of your bunk platform before you assume it fits.
ZAQYCM Made-to-Measure Angled Bunk
- Made to your measurements
- Left or right corner cut
- Medium firm memory foam core
- Removable zippered cover
Built to your own measurements, so it suits a bunk that no standard size fits. Send a photo and exact numbers, because ZAQYCM recommends against trimming it after delivery.
Pros
- Built to your bunk's own numbers
- Left or right cut is available
- Cover zips off for washing
Cons
- Offered in 2, 3 or 4 in, so confirm the thickness when you order
- Can't be trimmed after delivery
ZAQYCM is the option for a bunk that no standard size fits, because the brand builds the mattress from your numbers. You send a photo and your measurements, and you choose a left or right cut.
The core is medium firm memory foam under a knitted cover with a zipper that comes off for the washer. It's offered in 2, 3 or 4 in, so confirm the thickness you're ordering before you pay.
It ships compressed, so lay it flat and give the foam a few hours to expand. ZAQYCM says any slight odor fades within two to three days.
It suits an unusual corner, or a bunk whose measurements fall between two standard sizes. It's a poor fit if you plan to trim later, because ZAQYCM builds to your exact dimensions and recommends against trimming after delivery.
Gather your photo, measurements and cut side before you order. Hand measurements can be off by 1 to 3 cm, ZAQYCM warns, so measure twice.
Camping World Cozyway Curved Bunk, 50 x 74
- 50 x 74 in curved shape
- 4 in high-density foam
- Cotton or polyester cover
- Ships compressed in a box
A curved corner on a 50 x 74 in mattress, made for double-over-double RV bunks. Camping World also suggests it for a twin bunk bed at home.
Pros
- Clear size, thickness and weight (25 pounds)
- Ships compressed in a box
- Curved shape suits double-over-double bunks
Cons
- No corner cut size to match against your bunk
- Cover care isn't described
The Cozyway is built around a curved shape rather than a stated corner cut, and it's made for double-over-double RV bunks. It measures 50 x 74 in and is 4 in thick, with high-density foam in a medium feel.
The cover is cotton or polyester and the mattress weighs 25 pounds. Camping World's foam is CertiPUR-US certified, and the mattress ships compressed in a box, so unbox it and let it expand for a few hours before use.
Camping World also suggests it for a twin-size bunk bed at home, which is a use outside RVs.
Skip it if your bunk has a square corner or if you need a cut size to order, since Camping World doesn't publish one. Read our Cozyway review for a closer look at the curve.
With no cut size to go by, lay a straight edge along the curve and note where it starts and stops before you compare it with your bunk.
Kistrba 74 x 51 Corner-Cut RV Mattress
- 74 x 51 in, 3.2 in thick
- 21 in angle cut
- 30D memory foam over 30D support foam
- Knitted cover with a zipper
74 x 51 in with a 21 in angle cut and 3.2 in of two-layer foam. The cut side is described as both left or right and right only, so confirm the side before you buy.
Pros
- Longest of the two Kistrba sizes here
- Removable knitted cover, machine washable
- Two foam layers, 30D memory over 30D support
Cons
- Cut side is described two ways, so confirm it
- Called a topper in places
This Kistrba is 74 x 51 in and 3.2 in thick, with a 21 in angle cut. It's the longer of the two Kistrba models, so check it first if your bunk runs closer to 74 in than 73 in.
The layers are 30D memory foam over 30D support foam, which Kistrba says gives the mattress a stable base. The knitted cover has a zipper, comes off and goes in the washer, and Kistrba says the fabric promotes airflow.
It weighs 12 pounds, which is worth knowing if you plan to lift it onto the bunk yourself. Kistrba sells it as a replacement for thin factory mattresses in travel trailers and motorhomes.
Confirm the side with Kistrba before you buy, since the cut is described as both left or right and right only. The piece is also called a topper in places, so ask exactly what you will receive.
Kistrba 73 x 50 Right-Cut Corner Mattress
- 73 x 50 in, 3.2 in thick
- 21 in right angle cut
- Two foam layers
- Knitted cover with a zipper
73 x 50 in with a 21 in right angle cut. It is one inch shorter and one inch narrower than the 74 x 51 in model, and the weight figures for the two don't match.
Pros
- Slightly shorter option for slightly shorter bunks
- Removable knitted cover, machine washable
- Clear right angle cut
Cons
- Weight is given as 16 ounces, against 12 pounds for the 74 x 51 in model
- Called a topper in places
This is the shorter Kistrba, at 73 x 50 in with a 21 in right angle cut and 3.2 in of two-layer foam. It's an inch shorter and an inch narrower than the 74 x 51 in model, with the same foam and cover.
Pick it for a bunk close to 73 x 50 in with a right-side cut. Its weight is given as 16 ounces, while the 74 x 51 in model weighs 12 pounds, so ask Kistrba to confirm it before you order.
Skip it if your corner is cut on the left, since this one is a right angle cut. It's also called a topper in places, so confirm you're getting a replacement.
A one-inch difference in length or width can decide the fit, so measure your platform before you order.
FoamRush 3 in Bunk Replacement, 28 x 75
- 75 x 28 in, 3 in thick
- High-density foam
- Foam can be trimmed or stacked
- Not water resistant
A plain 75 x 28 in rectangle with no corner cut. The foam can be trimmed to fit, but a 50% restocking fee may apply on returns, so check the terms before you cut.
Pros
- Simple rectangle for a bunk with square corners
- Foam can be trimmed to fit
- CertiPUR-US certified foam
Cons
- No corner cut, so it skips the corner problem
- No cover in the box
- A 50% restocking fee may apply on returns
The FoamRush is a plain rectangle at 75 x 28 in and 3 in thick, so it has no corner cut to match. That makes it a choice for a bunk with square corners, not a fix for the corner problem this post covers.
This is the high-density version, not the gel memory foam FoamRush also sells. The foam can be trimmed with most slicing tools, you can stack layers for extra thickness, and FoamRush's foam is CertiPUR-US certified and made in the USA.
No cover comes in the box, so plan on getting one separately. The foam isn't water resistant either, which makes a cover worth having.
Skip it if your bunk has an angled or curved corner, or if you want a cover in the box. A 50% restocking fee may apply on returns, which matters if you plan to cut it to fit.
If you go with a plain rectangle, compare 75 x 28 in with your platform's length and width before you order.
Compare the six picks side by side
Match size and corner cut first, then check thickness and cover.
| Product | Best for | Size | Thickness | Corner | Our score |
|---|---|---|---|---|---|
| Daspom 4.7 in Corner Angle Cut Bunk | a thicker corner-cut bunk | 73 x 50 in | 4.7 in | 21 in angle cut | 8.6 |
| ZAQYCM Made-to-Measure Angled Bunk | an odd-shaped bunk | Made to your measurements | 2, 3 or 4 in | Left or right, custom | 8.4 |
| Camping World Cozyway Curved Bunk, 50 x 74 | curved double-over-double bunks | 50 x 74 in | 4 in | Curved, no cut size listed | 8.0 |
| Kistrba 74 x 51 Corner-Cut RV Mattress | a 74 in corner-cut bunk | 74 x 51 in | 3.2 in | 21 in angle cut | 7.8 |
| Kistrba 73 x 50 Right-Cut Corner Mattress | a right-cut bunk near 73 x 50 in | 73 x 50 in | 3.2 in | 21 in right angle cut | 7.6 |
| FoamRush 3 in Bunk Replacement, 28 x 75 | a plain rectangular bunk | 75 x 28 in | 3 in | None, plain rectangle | 7.0 |
How we picked these corner-cut bunk mattresses
We compared sizes, thicknesses, corner cuts, foam layers and covers, then scored each pick against what a corner-cut RV bunk needs. Our score weighs specs, features and buyer feedback against what you're shopping for.
A clear size and cut ranks higher than a vague one, because a fit you can't measure is hard to trust. No score promises fit, and only your own measurements can confirm it.
Bunk sizes vary by maker and floor plan, so measure your own bunk before you trust any number here.
We put the most weight on what you can check against your bunk: size, cut, thickness and cover. Comfort claims count for less, because no spec can tell you how your bunk will feel.
Daspom ranks first for its clear 21 in cut, extra foam and removable cover. ZAQYCM ranks second because it's built to your bunk, and the Cozyway ranks third because its curve comes with no cut size to measure against.
For the full set of RV bed sizes, see RV mattress sizes, the complete guide.
What a corner cut changes in an RV bunk
A square mattress can overhang or leave a gap where a bunk's corner is angled or curved. A corner-cut mattress is shaped to match that corner, so it lies flat instead of hanging over the edge.
Daspom says its cut maximizes sleeping space without excess overhang, which is the goal for any corner piece. The cut is the number to check first, because two mattresses of the same length can need different corners.
Measure twice, since a small error on the cut shows up as a gap or an overhang once the mattress is in place. A paper or cardboard template of your corner, laid on the platform, shows the cut size in minutes.
Angled and curved corner cuts on an RV bunk mattress
Curved and angled cuts both fit a corner, but they suit different bunk shapes. The Cozyway uses a curve with no stated cut size, while the Daspom and both Kistrba models use a 21 in angle.
Measure the corner cut before you compare sizes
Measure your bunk the way makers describe a cut, by length along each edge. Makers don't always say which edge their cut size covers, so ask if the numbers are close.
- Measure the full length and width of the bunk platform, not the old mattress.
- Measure the cut along each edge, from the corner to where the straight edge starts.
- Note which corner is cut, and take a photo with the cut in view.
- Compare your numbers with each model's size and cut, and ask the seller how they measure the cut if the numbers are close.
Left and right depend on your point of view, so use a photo and the seller's diagram instead of memory.
Ask about any detail that is described two ways. The 74 x 51 in Kistrba is described as left or right in one place and right only in another.
Both Kistrba pieces are called toppers in places, and that matters. A topper adds height on top of the bunk mattress you already have, so check whether you are buying a replacement or an add-on.
Single RV bunks are often 28 to 34 in wide and about 75 in long. Four of the pieces here are about 50 in wide, which is wider than most single bunks, so check your width first.
| Bunk type | Common size (width x length) |
|---|---|
| Single RV bunk | 28 x 75 in, 30 x 75 in or 34 x 75 in |
| Shorter single RV bunk | 28 x 72 in or 32 x 74 in |
| Double bunk | 42 x 80 in or 48 x 75 in |
These are typical sizes, not guarantees, and the RV bunk mattress size guide explains each one. For a full walk-through of any RV bed, read how to measure an RV mattress before you buy.
Thickness and guardrails come first on a top bunk
Thickness matters most on a top bunk, because a thicker mattress raises you closer to the guardrail. Follow the bunk maker's maximum mattress thickness and guardrail guidance, since each bunk has its own limit.
None of the six mattresses here comes with a limit for your bunk, so the bunk maker's rules decide. Measure the space above your platform to the top of the guardrail, then compare it with the maker's maximum thickness, and do not treat either number as a safe default.
A thicker mattress also changes how high the sleeping surface sits, so measure the surface you will actually lie on, not just the foam.
The Consumer Product Safety Commission (CPSC) publishes bunk bed safety guidance, and it is worth reading before anyone sleeps on a top bunk.
Before you order, check the bunk maker's guidance on these points.
- The maximum mattress thickness for your bunk model.
- The guardrail height and any rules about sleeping on the top bunk.
- Whether a cover or topper adds height to the sleeping surface.
- Who to ask if your bunk has no published limit.
For a wider look at thickness across RV beds, see how thick an RV mattress should be.
Covers, trimming and keeping it in place
Four of the six covers come off for the washer: the Daspom, ZAQYCM and both Kistrba models. Camping World doesn't describe Cozyway cover care, and the FoamRush cover isn't included.
Check the care label on your model before you wash anything.
FoamRush foam can be trimmed with most slicing tools, so a plain bunk can be cut to fit at home. Cut foam often can't go back, and a 50% restocking fee may apply on FoamRush returns, so measure twice before any cut.
A bunk mattress can shift on a smooth frame, and a non-slip pad or strap may help hold it still. Our guide to keeping an RV mattress from sliding covers the fixes, including gripper pads and straps.
Questions to ask before you order a custom or cut piece
If none of the fixed sizes matches your cut, a made-to-measure bunk is worth checking. ZAQYCM is the only option here that builds to your own numbers.
Send the same measurements you took earlier, plus a photo with the cut clearly visible. A fixed size that is close but not exact can leave a gap or an overhang, so a near match is not always a good one.
- Which corner is cut, and from which viewpoint do they name left and right?
- How do they measure the cut, and which edge does the 21 in figure cover?
- What is the final thickness, especially when more than one option is offered?
- Is the cover removable, and what does the care label say?
- What are the return terms for a custom or cut piece?
- Are the dimensions exact, and is the cut measured from the outer edge or the inner edge?
Most of these run medium or medium firm. Daspom, ZAQYCM and both Kistrba models put memory foam on top, while the Cozyway and FoamRush use high-density foam.
FoamRush's name for the mattress covers both medium firm and firm, so expect the firmer side. Feel is hard to judge from specs, so settle your cut and thickness first, then compare firmness.
If you share the bunk, talk through the feel with the other sleeper before you order.
Which corner-cut bunk mattress to buy
Pick the mattress whose corner cut matches your bunk, then check its thickness against your bunk maker's limit before you order. Use these rules to narrow the six.
- Pick the Daspom if your bunk is close to 73 x 50 in with a 21 in cut, and your bunk maker's limit allows 4.7 in of foam.
- Pick the ZAQYCM if your bunk has an odd shape and you can send a photo and exact measurements.
- Pick the Cozyway if you have a curved double-over-double bunk and don't need a stated cut size.
- Pick a Kistrba if your bunk is 74 x 51 or 73 x 50 in and you want 3.2 in of foam.
- Pick the FoamRush only if your bunk has square corners and you don't plan to cut it.
Measure your bunk first, then read the Cozyway review if your bunk is curved.
Our top 3 picks at a glance
-
1
Best for a thicker corner-cut bunk
Daspom 4.7 in Corner Angle Cut Bunk
8.6/10 our score
See it on Amazon -
2
-
3
Best for curved double-over-double bunks
Camping World Cozyway Curved Bunk, 50 x 74
8.0/10 our score
See it on Amazon
Frequently asked questions
What is a corner-cut RV bunk mattress?
It is a bunk mattress with an angled or curved corner removed, so it fits a bunk where a square mattress would overhang or leave a gap. The cut is described by size, such as a 21 in angle, and some makers build custom cuts to your measurements.
How do I know whether I need a left or right corner cut?
Look at which corner of your bunk is cut, then check the maker's diagram or send a photo, because left and right depend on your point of view. Confirm the side in writing, since the Kistrba 74 x 51 in model is described as both left or right and right only.
How thick can a bunk mattress be?
The limit depends on your bunk, so follow the bunk maker's maximum mattress thickness and guardrail guidance rather than a general number. None of these six mattresses comes with a limit for your bunk, and the Consumer Product Safety Commission publishes bunk bed safety guidance worth reading first.
Can I cut a foam bunk mattress to fit my corner?
Some foam can be trimmed with a slicing tool, and FoamRush says its foam can be cut to fit. Cut foam often can't go back, and a 50% restocking fee may apply on FoamRush returns, so measure twice before you cut.
Can I wash the cover on a corner-cut bunk mattress?
On four of the six, yes: the Daspom, ZAQYCM and both Kistrba covers come off and go in the washer. Check the care label on your model first, since Camping World doesn't describe Cozyway cover care and the FoamRush cover isn't included.
