Foilmastic UL181B-FX Listed Sealant Tape, 2″, 17 mil, 60 yd Roll DT-36717A2

The Foilmastic UL181B-FX Listed Sealant Tape, 2″, 17 mil, 60 yd Roll (DT-36717A2) is a thick aluminum foil sealant tape listed to UL181B-FX for sealing and repairing HVAC duct systems, featuring a mastic-coated foil backing with a high-tack acrylic adhesive designed to create an airtight and moisture-resistant seal; it offers approximately 17 mil total thickness, published adhesion near 60 oz/in to steel, and a typical operating temperature range from about -20°F to 260°F, making it well suited for code-compliant sealing of rigid and flexible duct joints, seams, and connections, with one roll included per unit.