A UV Resistant, UL181B-FX Listed Flexible Duct Closure Tape 3M™ Venture Tape™ UL181B-FX Polypropylene Duct Tape 1599B Is a 3 mil, UV resistant, bi-axially oriented polypropylene (BOPP) flexible duct closure tape coated with a cold weather acrylic adhesive system. This tape is strong and conformable, allowing it to adhere to curved and irregular surfaces with ease. This tape offers excellent UV resistance while performing at elevated temperatures and in high humidity. The exterior of the tape is UL printed for easy identification. 3M™ Venture Tape™ UL181B-FX Polypropylene Duct Tape 1599B meets or exceeds all requirements of UL181B-FX related to closure systems for flexible air ducts and air connectors. Recommended Applications Sealing flexible air ducts Sealing air connectors Securing flex ducts Excellent Adhesion in a Wide Range of Temperatures 3M™ Venture Tape™ UL181B-FX Polypropylene Duct Tape 1599B is coated with a cold weather, pressure sensitive acrylic adhesive system that performs well in cold weather conditions, yet still excels at normal and elevated temperatures. The adhesive bonds immediately on contact to a variety of materials, including fiberglass, foam, metal and fibrous duct material. With a service temperature ranging from -40°F/-40°C to 185°F/85°C, this tape can be applied in a variety of environmental conditions. Once bonded, this tape features good aging properties and resists lifting and curling over time. Bringing Better Ideas to the Surface through Science and Innovation In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.