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[quote user="CSXFan"]Atomic,It's just regular plywood from Lowes. I'm a little disappointed about how strong it is, even when it’s cemented to the foam board. There is noticeable sagging and warping where the ply has to span more than 10". Next time I will use at least 3/8" ply or bigger. The entire sub-bed rests on a series of 1x3s strung between 1x4s spaced about 12" apart. Here's a pic.  [IMG]http://i75.photobucket.com/albums/i289/jdykstra11/DSCN1486.jpg[/IMG [/quote]thats exactly what i wanted to know. :) thank you.
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