Aluminum tape 38 mm x 50 m blank, 0.07 mm thick. 1 roll / package Aluminum foil with acrylic adhesive. Good adhesion. High diffusion density. Mildew resistant. Good aging resistance. Self-extinguishing. Without protective liner. For jointing and sealing of insulating material and ventilation ducts. Also for reflective marking of joints: shielding noise protection for motors and as heat reflection.