3M Aluminum Foil Tape 1521CW Silver 72 mm x 45.7 m 2.8 Mil Heavy Duty Cold Weather Adhesive Duct Sealing Tape For Fibrous And Sheet Metal Ducts Insulation And Seaming 16 Rolls Case

Heavy-Duty Aluminum Foil Tape 1521CW for Duct Sealing
✔️ 2.8 mil aluminum foil tape with cold-weather adhesive

This aluminum foil tape with a 2.8 mil total thickness and cold-weather adhesive is designed for masking and sealing ductwork and insulation seams. It conforms to curved surfaces on fibrous and sheet metal ducts and offers easy hand-tearability for quick installs in cold environments.

✅ 72 mm x 45.7 m (2.83 in x 150 ft) roll, 2.8 mil total thickness
✅ Cold-weather adhesive bonds down to -10 °F (-23 °C)
✅ Foil backing conforms to curved surfaces on ducts
✅ UL723 flame/smoke rated for duct sealing
✅ Pack of 16 rolls per case

💡 What is aluminum foil duct tape used for in HVAC insulation and sealing projects? This handy guide explains the basics and practical usage.

- Helps seal joints and seams in ductwork to reduce leaks - Reflects heat to improve insulation and energy efficiency - Works in cold environments and on irregular duct shapes - Easy to apply by hand without special tools