Reflectix Standard Edge Double Bubble Insulation Foil On Both Sides 48 " X 125 ' R3.7 R21

The product consists of two 96% reflective layers of film bonded to two internal layers of heavy gauge polyethylene bubbles (total thickness 5/16”) 48“ x 125’ Roll covers 500 sq. ft. Product benefits (R-value and/or radiant barrier) vary per application A single bubble product configuration is also available for special applications