... & Permanent Bonding Foil-Fiberglass Cloth Tape Features:1) High tensile strength aluminum foil made from special aluminum alloy, coated with aggressive solvent-based ... -conditioning duct workSpecifications:1) Backing: 7u aluminum foil laminate with Fiberglass Cloth 2) Roll width: 48, 50, 60, 72, 75, 96, 100mm ...