Hello everyone. Green as can be to the pop up trailer adventures but not new to forums. Before anyone says search, I have. My wife and I want to replace the mattress that came with our pop up with something thicker and were thinking of a six inch mattress.
Will this give us any grief when trying to close the top? How thick can we go before we start having issues with being able to close the top?
I would try measuring to see. I know our 1007 had a couple of inches of head room under the top; we could put some flat items on top of the beds, but you do need to look for obstructions. I would make a simple compressable measure (a dome of your kid's play dough for instance), and place it at what appears to be the lowest point. Close the lid on it and measure how far it compresses down. Note that you can probably go a little deeper than this measure as the mattress can compress some, but that does cut off air flow if things get damp. Our mattress always had the impression from the screen door handle temporarily embedded in it when the lid was opened.
If you replace with a regular RV mattress, I do not think a six inch will compress enough when the top closes. You might be able to use a six inch memory foam mattress and quite frankly, the memory foam mattress will likely be more comfortable.
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Frank
2014 Ford F150 SCab 4x4 5.0L Tuxedo Black Metallic
2017 Jay Flight 21 QB Elite
2015 Jay Series 1007 UD (sold)
My wife and I want to replace the mattress that came with our pop up with something thicker and were thinking of a six inch mattress. 
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