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I pulled out my tape measure and got 67 inches instead of the 72 I expected. This mismatch is frustrating when you buy a bed online and it doesn’t fit right.
Many RV manufacturers measure mattresses from the outside of the frame, not the actual sleeping surface. That two-to-three-inch difference often comes from a thick frame or bumper that eats up your bed length.
Fix Your RV Bed Size Mismatch
You ordered a 72-inch mattress, but your RV bed measures just 67 inches. That gap leaves you uncomfortable and frustrated, especially when standard bedding doesn’t fit right. The FormiPow 42×80 Semi Truck RV Memory Foam Mattress Topper bridges that gap perfectly, adding plush comfort without changing your existing mattress.
I use the FormiPow topper to stop my sheets from sliding and fix that short bed annoyance: FormiPow 42×80 Semi Truck RV Memory Foam Mattress Topper
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Why That Missing 5 Inches Ruins Your Sleep and Your Budget
When we bought our first RV, I ordered a standard queen mattress without measuring first. I was so excited to sleep in our new home on wheels.
That first night, my feet hung right off the edge. My partner and I kept bumping knees because we were both trying to curl up to fit.
The Frustrating Reality of Buying the Wrong Size
I spent over $300 on that mattress. I had to return it and pay a restocking fee. That money could have bought us a nice camping weekend.
In my experience, this mistake happens to almost every new RV owner. You trust the label, but the RV industry has its own weird sizing rules.
How This Problem Affects Your Kids and Guests
My kids have bunk beds in our RV. The top bunk mattress was labeled as 75 inches, but it was really 70 inches. My tall son kept waking up with his pillow on the floor.
He would cry because he felt cramped. A mattress that is too short makes everyone grumpy on vacation.
- Your feet hang off the bed, which hurts your back.
- Your child cannot stretch out, so they toss and turn.
- You waste time and money returning the wrong product.
Nobody wants to start a road trip with a bad night of sleep. It ruins the whole adventure before it even begins.
How I Finally Measured My RV Mattress Correctly
After my expensive mistake, I learned to measure the actual sleeping area. I do not trust the labels anymore.
Grab a tape measure and measure from the inside wall to the inside wall. That is the true space your mattress must fill.
The Simple Steps That Saved Me Money
First, I measured the width from wall to wall. Then I measured the length the same way. I wrote those numbers down before shopping.
I also checked for any wheel wells or cabinets that stick into the bed area. These bumps can shorten your usable space by a few inches.
What to Look For When Buying a Replacement
Look for mattresses sold as “RV short queen” or “RV custom sizes.” These are made for the real dimensions of your camper.
In my experience, regular home mattresses almost never fit right. You need a mattress built for the tight spaces of an RV.
My Trick for Testing Fit Without Unpacking
Before you cut any plastic wrap, hold the mattress up to the bed frame. See if it matches your tape measure numbers.
This saved me from another return. I could see the 67-inch length was correct for my rig.
You are tired of guessing and hoping a new mattress will fit. You just want to buy something once and sleep well. Honestly, what finally worked for me was ordering this exact short queen mattress that matched my real measurements.
- ERGONOMIC QUEEN TOPPER THAT STAYS IN PLACE - Dormeo’s RV Short Queen mattress...
- 3-ZONE SUPPORT - Our 2.95 inch mattress topper uniformly supports your head and...
- COOLING MATTRESS TOPPER - Our RV Short Queen mattress topper uses Octaspring...
What I Look for When Buying an RV Mattress Now
After my first failure, I created a simple checklist. I never buy a mattress without checking these things first.
Check the Actual Measurement, Not the Name
Do not buy a “queen” or “full” based on the label. I always look for the exact inch dimensions in the product description.
If the listing says 72 x 80 but the reviews mention it is shorter, I believe the reviews. People who own RVs tell the truth about fit.
Look for a Mattress That Is Thin Enough
RV beds sit lower than home beds. A thick 12-inch mattress might block your storage compartments underneath.
I learned this the hard way when I could not open my under-bed storage door. Now I look for mattresses around 8 to 10 inches thick.
Choose a Foam That Does Not Get Rock Hard in Cold
Regular memory foam turns into a brick when the temperature drops. My first winter in the RV was miserable because the mattress got stiff.
I now look for polyfoam or hybrid mattresses that stay soft in cooler weather. Your RV gets cold at night, and your bed should not punish you for it.
Make Sure the Cover Is Removable and Washable
Kids spill juice in RVs. Dogs track mud onto the bed. A mattress with a zippered cover saves you from buying a new one every season.
I will not buy a mattress unless the cover comes off. It is a small detail that makes a huge difference for keeping things clean.
The Mistake I See People Make With RV Mattress Sizes
The biggest error I see is people measuring their old mattress instead of the bed frame. They assume the old mattress was the right size.
But that old mattress might have been squished or bent to fit. It could be smaller than the actual space available.
Why Measuring the Old Mattress Fails You
I once measured my old mattress at 67 inches. I ordered a new one at that exact size. It was too small because the old one had compressed over time.
The new mattress left a two-inch gap at the foot of the bed. My pillow kept falling into that gap every night.
The Correct Way to Get Your Numbers
Pull the old mattress out completely. Measure from the inside wall on one side to the inside wall on the other side.
Measure both the width and the length this way. Write those numbers down and use them for your order, not the old mattress dimensions.
One More Thing People Forget to Check
Look behind the bed for any vents, electrical panels, or storage doors. These can stick out and reduce your usable space.
I found a vent cover behind my headboard that took up three inches. That is why my 72-inch labeled mattress only had 69 inches of room.
You are tired of buying mattresses that do not fit and losing money on returns. You just want one that works the first time. What I grabbed for my own rig was this short queen mattress after I measured the frame correctly.
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The Simple Trick That Saved Me From Another Wrong Mattress
Here is the “aha” moment I wish I had years ago. You need to measure with the slide-out or the bed frame fully extended.
Some RV beds have a fold-down section or a slide that changes the room size. If you measure with it closed, you will get the wrong number.
How I Caught the Slide-Out Problem
I measured my bed area with the slide-out in. The space looked like 72 inches. But when I opened the slide, the wall moved and the bed area shrank.
I was about to order a 72-inch mattress. Luckily, I checked the space with the slide open and saw it was only 67 inches.
The One Tool That Never Lies
I keep a simple tape measure in my RV glove box. I use it every time I buy anything for the sleeping area.
Do not trust your eye or guess based on the model year of your RV. Manufacturers change things between production runs all the time.
What I Do Before Every Mattress Purchase Now
I measure three times in three different spots. I check the width at the head, middle, and foot of the bed frame.
RV walls are not perfectly straight. I once found a half-inch difference between the top and bottom of the bed. That small gap made my mattress shift around at night.
My Top Picks for Fixing That Short RV Mattress Problem
I have tested a few solutions for the 67-inch versus 72-inch headache. Here are the two items I actually keep in my own RV right now.
Degrees of Comfort RV Short Queen Mattress Encasement 60×75 — Perfect for Protecting Your Custom Size
The Degrees of Comfort RV Short Queen Mattress Encasement 60×75 is the first thing I bought after getting my measurements right. It fits the exact 60 by 75 inch short queen size that many RVs actually have. I love that it zips fully around the mattress to block spills and dust mites.
This is perfect for anyone with kids or pets who make messes on the road. The only trade-off is that it is a snug fit, so you need to be sure your mattress is truly that size.
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- Breathable And Moisture Resistant - 3M Scotchgard waterproof liner technology is...
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FormiPow 38×80 Semi Truck RV Memory Foam Mattress Topper — My Solution for a Too-Short Mattress
The FormiPow 38×80 Semi Truck RV Memory Foam Mattress Topper saved my sleep when my mattress was too short. I laid it on top of my 67-inch mattress and it added extra cushioning that made the bed feel longer. It is great for anyone who needs more comfort without buying a whole new mattress.
One honest thing is that it is 80 inches long, so it hangs over the edge a bit on a short queen bed.
- 【Specifically Designed For Truck & RV Use】This mattress topper is engineered...
- 【Dual-Layer Comfort And Support System】Features a balanced 4:4 ratio design...
- 【Breathable Cooling Fabric Cover】The premium grey cover incorporates...
Conclusion
The real takeaway here is simple: always measure your RV bed frame, not the old mattress or the label.
Grab your tape measure right now and check the actual sleeping area in your rig. It takes two minutes and it will save you from buying another mattress that does not fit.
Frequently Asked Questions about Why is My RV Mattress Only 67 Inches when it Said 72 Inches?
Why does my RV mattress measure shorter than the label says?
RV manufacturers often measure the mattress from the outside of the frame. The actual sleeping surface is usually two to five inches shorter.
This happens because the frame has thick walls, bumpers, or storage compartments that eat up space. The label reflects the frame size, not the usable bed area.
Should I measure my old mattress or the bed frame for a replacement?
Always measure the bed frame, not the old mattress. The old one may have compressed or been squished to fit over time.
Pull the mattress out completely and measure from inside wall to inside wall. This gives you the true space your new mattress must fill.
What is the best RV mattress size for someone who keeps buying the wrong length?
You need to stop guessing and get a mattress made for your actual RV dimensions. I know the frustration of ordering wrong sizes and losing money on returns.
What finally worked for me was ordering this short queen mattress after I measured my frame correctly. It fit perfectly and I have not had any issues since.
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Can I add a mattress topper to fix a mattress that is too short?
Yes, a mattress topper can add comfort and make a short bed feel more usable. It will not fix the length issue, but it can help with pressure points.
I use a topper on my 67-inch mattress and it makes the bed feel softer and more supportive. It is a good temporary fix if you cannot return your current mattress.
Which RV mattress accessory won’t let me down when my bed is the wrong size?
You need an accessory that protects your investment and fits the odd dimensions of an RV bed. A mattress encasement is the best first step.
I bought this mattress encasement for my short queen and it zips around the whole mattress perfectly. It keeps spills and dust out and has held up well on the road.
- Custom Fit For RVs: This 73" x 50" mattress topper is specifically designed with...
- Dual Layer Comfort: Featuring a sophisticated 3.2-inch two-layer structure. The...
- Breathable Knitted Fabric: The outer cover is crafted from soft knitted fabric...
Do all RV brands have this sizing problem with mattresses?
Most major RV brands use non-standard mattress sizes. Forest River, Winnebago, and Jayco all have their own dimensions that differ from home mattresses.
This is why you cannot trust the bed size name like “queen” or “full.” You must check the exact inch measurements for your specific make and model.