Scotch Foil Tape 3326 is especially designed for use on UL listed flexible and rigid air ducts. Its specially formulated acrylic adhesive bonds quickly and holds even at -25oF. Its soft aluminum handles and applies easily but still provides strength for UL 181A and ULB-FX compliance. The printed backing provides code compliance verification for building inspectors.

• Soft aluminum applies easily
• Can be used under all weather conditions
• Resists water vapor, odor and smoke transmission
• Adhesive is protected until the liner is removed
• For UL 181A and ULB-FX compliant
• Printed backing provides code compliance verification for building inspectors
• Color: silver
• Contains: 1-roll/pack
• Size: 2.5 in. x 60 yd.

The 3M Foil Tape 3340 is ideal for sealing rigid fiberglass duct boards and flexible air duct systems. Our tape meets requirements for UL 181 A-P and UL 181 B-FX Listings as a measure of reliability and quality standards. 2.0 mil aluminum foil backing is ideal as a vapor seal tape for duct closure.

• Listed for both UL181A-P and UL181B-FX
• Replaces mechanical fasteners for rigid duct board
• Thermally conductive backing helps heating and cooling efficiency
• Permanent acrylic adhesive combined with the durable 2.0 mil backing provides long service life