Reflective Insulation Shield, Heat Shield, Thermal Insulation Shield 16"x50ft, 16''x100ft, 24"x50ft, 24"x100ft, 48"x50ft, 48"x100ft (24"x50') Strong but lightweight Fire rate Class 1 / Class A Unaffected by humidity and moisture NON TOXIC, WILL NOT IRRITATE SKIN, EYE OR THROAT Will not lose its performance and provides vapor barrier