3M SKU: 7100189974
Lead Time: ~2 days
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. Permanent acrylic adhesive combined with the durable 2.0 mil backing provides long service life. Replaces mechanical fasteners for rigid duct board. Thermally conductive backing helps heating and cooling efficiency