thickness 1.1mm, 3 layers PET film composuted with Class F adhesive. idea substitution of fiberglass fabric insulation sleeves. ... BOPET FILM Thick Polyester composite insulation film, with the thickness of 1.1mm, compounded with 3 layers of PET film and Class F ... as well. Supply in rolls, packed in carton after sealing with reinforced plastic film bagstandard width of 800mm, 1000mm, 1100mm, 1200mm ...