Premium Grade Duct Tape, 3" x 60 yds, 10 mil, Tensile: 27 lbs/inch, White (3 Count) Typically used in the HVAC industry on sheet metal and flex duct. Other applications include carton sealing, book binding, seat repair, holding and bundling. Waterproof backing. Aggressive adhesive. Good for temperatures up to 200 F degrees.