The 3M Foil Tape 433 is a 2" wide pressure-sensitive aluminum foil tape with acrylic adhesive that bonds well to most clean and dry surfaces. It has a thickness of 3.6 mils and can withstand temperatures up to 250°F. This tape provides excellent reflection of heat, light, and sound and offers corrosion and moisture resistance. It can be used for HVAC duct sealing, joining sheet metal, masking, wrapping, and general repair. This USA-made tape meets UL 723 specifications and comes in a standard length roll of 60 yards.