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Enclosing bottom of rv
Measure between the frame rails (approx 6ft) Next go to Home depot or Lowes and get some 1in thick foam board,highest r value you can find(4'x8' sheets approx 6ea). Next a half gallon of denatured alcohl for cleaning the outside frame rails. Next a couple of rows of duct tape( for temp holding). You will also need 1.5" X 2"x 6-8' ALUM L angle(about 10-12 pieces). Some 4' x 8' 4mm honey comb plastic sheets.
Mark all your cross members on each outside frame rail(Drawing also helps with measurements). Install one foam board and one plastic sheet( use duct tape to hold in place), You can cut all with a good razor knife.
I measured 3' wide for each piece, and cut then taped one at a time up so I could drill holes into the crossmembers for srews(self taping approx 1.5-2" long). Then just wotk your way back. Farm teck has a neat connector H for the plastic. This is pretty close to the factory setup. Once your all done caulk around the seams. Don't forget to make a door for your dump valves.
Good luck
Craber0001
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