3M 85493, Scotch Foil Tape 3311-50A, 2.0 in x 50 yd (50.8 mm x 45 m), 7010340408

Scotch Foil Tape 3311 is a conformable tape with silicone treated liner that unwinds easily to minimize errors and wasted tape . It is flexible and easy to apply in tight spaces, making it the ideal tape for duct repairs. The soft aluminum foil also conforms to irregular surfaces and provides a reliable vapor barrier.