From the Manufacturer
Cantech 36201 FlexPro Flexible Duct Tape, Black, 48mm is made with a special UV-resistant, treated polypropylene film, and coated with high shear, high-tack acrylic adhesive. This flexible duct tape meets UL 181B-FX requirements as a closure system for flexible air ducts and air connectors. An excellent alternative to aluminum foil tape, it allows for a tighter seal and more convenient use. Resistant to mold, moisture, flame spread and smoke generation. Cantech Industries Inc. manufactures a range of pressure sensitive tapes, plastic film and a wide assortment of trash, recycling, storage and compostable bags.