product description:
48 inch x 50 , standard edge double bubble foil both sides reflective insulation, 5/16 inch thick with two outer layers of aluminum foil, each foil layer is bonded to a tough layer of polyethylene for strength, reflects up to 97% of radiant heat, R-value up to 14.3 depending upon application, excellent vapor barrier for below grade, can be used for crawl space, duct insulation, side walls, metal buildings, basement walls & attics, product has been evaluated by icebox, boca, ccmc, sbc & Dade county, easy to install with tape & staples.
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