Reflectix BP48050 Double Bubble Foil Reflective Insulation 48" W X 50' ft. L 48" x 50', standard edge double bubble foil both sides reflective insulation, 5/16" 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 icbo, boca, ccmc, sbcci dade county, easy to install with tape staples. The Reflectix double reflective insulation is the most versatile, widely distributed and energy efficient product that we manufacture. The characteristics that make it so attractive include ease of handling and installation, more than 40 commercial and residential construction applications and a large selection of product configurations to accommodate the vast majority of applications/buildings. Thickness 5/16" Energy Star Certified Yes Insulation Type Radiant Barrier Roll or Batt Roll OM/RU 1/50 Formaldehyde Free Yes Width 14.00 Number in Package 1 pk UOM RL/50' Length 14.00 Product Type Insulation R Value R-3.7 to R-21 Facing Reflective Vapor Retardant Yes Each Weight 12.000 LB Height 48.00 Product Thickness (in.) 0.3125 Product Width (in.) 48 ECCN EAR99 Product Length (ft.) 50 Friction Fit N Roll or Sheet Roll Country Origin Code US Coverage Area (sq. ft.) 200 Thickness (In.) 0.3125 Width (in) 48 Length (ft) 50 Insulation Location Basement Walls, Crawl Spaces and Attics