3M(TM) Heavy Duty Duct Tape 3939 is composed of a waterproof polyethylene film over cloth scrim backing with a rubber adhesive used for demanding duct tape applications. 3M(TM) Heavy Duty Duct Tape 3939 offers easy tear and conformability. Individual roll wrap preserves integrity of the roll for less waste. The product number is printed in core to insure the correct product is used. Good moisture resistance. Has good tensile strength.
