aluminum foil tape width; 48mm, 60mm, 70mm thickness; 18u, 22u, 25u, 30u, 45u ... joints and seams of foil jacket facings in air-conditioning duct work specifications;1) Foil thickness; 18, 22, 25, 30, 36 ... : 1.2*45m, 1.2*50 self adhesive aluminum foil tape