3M Venture Tape Aluminum Foil Tape 1520CW is a nominal 1. 8 mil foil backed tape that excels in a range of applications and environments including low temperatures. It is excellent for general-purpose heat shielding and light reflecting applications. Its aluminum foil backing is coated with a cold weather acrylic adhesive. The aluminum backing conforms around corners and to curved and irregular surfaces with ease and is an ideal choice for applications on both fibrous and sheet metal ductwork. The adhesive performs extremely well in demanding cold and hot temperature applications. The tape is hand tearable and installs easily, eliminating the need for additional tools or applications methods.