spunom
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- Aug 6, 2018
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They have it at Lowes. The R3.5 is $14. Gonna grab a sheet tomorrow so I can finish up the veg room I'm building.That's RMax. You can get different thicknesses. Can put it together with Duct Tape. The backside is white. Easy to cut holes with a razor knife.
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https://www.homedepot.com/p/Thermas...-Rigid-Foam-Insulation-Board-787264/100549260