VentureTape 1525CW COLD WEATHER FSK is a foil/scrim/kraft (FSK) lamination coated with Venture's cold weather solvent acrylic pressure sensitive adhesive. This versatile FSK tape applies easily to both fibrous and sheet metal ducts and easily conforms to irregular surfaces. Tri-directionally reinforced 2 x 3 squares per inch fiberglass scrim, UL listed FSK lamination. Venture Tape 1525CW excels in demanding temperature and humidity applications and provides superior performance and durability over a wide range of environmental conditions. High performance insulation tape is ideal for use as a vapor seal for reinforced fiberglass or mineral wool thermal insulation. Product photo may not reflect the actual size of this product.