Scotch Flue Tape is designed to effectively stop leaks from hot air ducts, making it an essential tool for maintaining heating systems. This tape can withstand temperatures up to 600 degrees Fahrenheit (315 degrees Celsius), ensuring reliable performance even in high-heat environments. For results, clean the surface and allow it to cool before applying the tape directly from the roll. It is for seasonal use, providing a convenient and efficient solution to seal ductwork. Please note that the tape may lift off if applied over previously damaged, cracked, or peeling coatings when removed. The silver-colored tape measures 1-1/2 inches in width and 15 feet in length, packaged individually for ease of use. Model Number: 2113NA