A 30 micron high tensile strength aluminium foil backing, combined with a cold weather acrylic adhesive, protected by an easy-release silicone release paper. Applications include HVAC industry for joining and sealing Foil-Scrim-Kraft Facing laminated fiberglass blanket /duct board joints and seams; joining and sealing flexible air duct seams and connections. General purpose holding, patching, sealing and masking applications. FL1713 meets the requirements of UL723:2008