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Old 06-21-2020, 02:34 PM   #1
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Over cab mattress

I sleep in the over the cab bed on a class c
it's a 4" thick polyfoam pad. its fairly firm, but my 200 lbs tends to compress it down to 1" in two places. thinking I need a sheet of even more firm (extra Firm ) 40" x 80" x 4" polyfoam pad. any suggestions ?
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Old 06-21-2020, 03:32 PM   #2
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these guys

https://www.mattressinsider.com/

They have lots of pre-designed options and will also custom build anything you want, and they are reasonably priced. I use them for every coach I buy - three so far. Measure to the lowest point on a window or whatever you don’t want to obscure and if that’s 7 1/4” have them build you one that thick. What ever level of firmness you want too. I’ve Always been satisfied with the price, product and people.
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Old 06-22-2020, 10:21 AM   #3
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I have more than 10 years of experience with cheap RV foam mattresses. My first take is your 4" foam is too thin. On the other hand "foam" comes in all kinds of performance ability.

Cheap foam is usually lower density, contains fillers like clay, and is sensitive to body heat. Clay separates from the foam causing loss of firmness over time. Body heat softens the foam so you wake up with sore spots after 8 hours. Memory foam is a marketing strategy to sell absolute lowest quality.

My solution was to add 3" of higher density, higher quality, custom size foam from Verlo Mattress Factory over the top of the factory delivered foam.

The mattress in my new cheap TT is 5" and was fairly firm. Two years later it sages in the middle but still doesn't leave me sleeping on the board underneath by morning. I will soon have to do something about it.

How do you know you are getting high quality foam? I don't know. The sales hype is way over the top. Marketing departments are high quality and as such are experts at deception and promotion.

No one reliable tests them and reports and if they did, the marketing departments would respond and change all the labels and terminology.

I wish you good luck and happy trails ahead!
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Old 06-22-2020, 11:15 AM   #4
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Call the folks at Mattress Insider (link above) and have a discussion with them. Between their customer service, expertise, product quality, and warranty policies (and American made!), you won’t be disappointed.

The ability to have exact dimensions and custom shapes really helps with RV mattress replacement. Also the ability to increase height. I went to 9” high on one because there was that much room under the window, and 58 1/2” wide instead of 60” because it was a tight fit and the factory 60” wide mattress was difficult to make up. I also added 4” in length on one because there was room and I’m 6’5”.

And my first order from Mattress Insider was for a B+ with a cut-corner mattress (provided bathroom door clearance) and it fit perfectly and was built to the exact dimensions I specified. Also three layers of different foams designed for dry, cool, no sag sleeping.

So I wouldn’t go anywhere else. Prices are ok too. I’ve spend between $350 for a stock extra firm queen, to $700 for a complete custom multi-foam job. Always satisfied.
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Old 06-22-2020, 11:51 AM   #5
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I'll second Mattress Insider.
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Old 06-22-2020, 12:01 PM   #6
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X3 for matressinsider.com

We did the kids bunk beds and it's a night and day difference. They love it now where they used to hate it.
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Old 06-23-2020, 03:29 PM   #7
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Buyfoam.Com was where I bought replacement foam for my dinette in my previous rig. Lots of variety, and they give great advice. The prices were amazingly inexpensive. If you need a covered piece of foam, go to a mattress place. If you just want the foam, try this place.
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