TVM Building Products W753 Double Bubble Construction Insulation, 24" x 50'Highlights: Type : Double Bubble Thickness : 5 16 in Width : 24 in Length : 50 ft Coverage Area : 100 sq ft Material : Aluminum Polyethylene Safe to use; non toxic; easy to install Does not require special protective clothing Lowers air conditioning heating costs 5 16" thick, multi layer, double bubble reflective insulation in rolls of various widths and lengths Reflects 94% of radiant heat Class 1, Class A fire rating Seams should be sealed with TVM