Product :Aluminum foil bubble thermal insulation There are two types of Aluminum foil bubble thermalinsulation that qualify: single-bubble and double-bubble. Single-Bubble thermal insulation Product: One layer of 5/32" barrier bubble film laminated between two layers of foil Has a temperature range of -60 to 180 degrees Farenheit Does not shrink Puncture resistant to 60 lbs/in No mold or mildew growth Flame retardant Class A/ Class 1 Fire Rating Typical R-Value 14.9 Double-Bubble thermal insulation Product: Two layers of 5/32" barrier bubble film laminated between one layer of foil and one layer of white polyethylene Has temperature range of -60 to 180 degrees Farenheit Does not shrink Puncture resistant to 60 lbs/in No mold or mildew growth Flame retardant Class A/ Class 1 Fire Rating Typical R-Value 15.4 Type: 1) AL / bubble / white PE anti-flaming sheet (bubble: Dia.: 10mm, H: 4mm) 2) AL / bubble / white PE anti-flaming sheet (bubble: Dia.: 10mm, H: 2.5mm) 3) AL / bubble / AL (bubble: Dia: 10mm, H: 4mm) 4) AL / bubble / AL (bubble: Dia: 10mm, H: 2.5mm) 5) AL / bubble + bubble / AL (bubble: Dia: 10mm, H: 4mm) 6) AL / bubble + bubble / AL (bubble: Dia: 10mm, H: 2.5mm) 7) AL / white anti-flaming bubble / AL with Blue Color (bubble: Dia: 20mm, H: 7mm .Dia;20 mm, H:8 mm) ******* Normal roll size: 1.2mx 40m/roll *********