Ideal Tape 488 Aluminum Foil Tape is a premium-grade, dead soft aluminum foil tape specifically designed for sealing seams and joints of duct board and duct wrap insulation. This tape is UL Classified and UL 723 Rated, ensuring high performance and reliability for HVAC applications. With a convenient width of 3 inches and a generous length of 50 yards, it provides ample material for various sealing tasks, making it an essential choice for both professionals and DIY enthusiasts.