The 3M™ Venture Tape™ Aluminum Foil Tape 3520CW is a 2.0 mil dead soft aluminum foil tape coated with a pressure sensitive acrylic adhesive designed to perform in a broad range of temperatures. This malleable foil tape applies easily to fibrous and sheet metal ducts and conforms to irregular surfaces, excellent for HVAC. It excels in a variety of temperatures and environmental conditions.The 3M Venture Tape Aluminum Foil Tape is a 2.0 mil aluminum foil tape that excels in demanding applications. Its foil backing and cold-weather pressure sensitive acrylic adhesive perform in temperatures from -40 to 250 F (-40 to 121 C). The aluminum foil backing conforms well around corners and to irregular surfaces. This tape provides an excellent vapour seal in various duct sealing applications. It is hand tearable and installs easily, eliminating the need for additional tools or application methods.