3M VentureTape Duct Joint Sealing Mastik Tape, 2 IN x 100 FT, 1580 UL181B-FX

3m venturetape duct joint sealing mastik tape 1580 ul181b-fx 2 in x 100 ft -70008900790 3m venture tape 1580p is a printed 2.0-mil (50m) annealed aluminum foil coated with a heavy application of mastik adhesive.venture tape 1580p meets ul181b-fx requirements and excels in demanding temperatures and humidity applications and provides superior performance and durability over a wide range of environmental conditions. 2" wide. the malleable foil applies easily to both fibrous and sheet metal ducts and conforms to irregular surfaces.