Polyken® Foil Tape, Premium Grade Cold Weather, Series: 339, 60 yd Length, 72 mm Width, 4.9 mil Thickness, Aluminum, Acrylic Adhesive, Aluminum Foil Backing, 68 in-oz Steel/60 in-oz Backing Adhesion Strength, 25 in-lb Tensile Strength, 325 deg F Maximum Operating, -20 deg F Minimum Operating