This 2” wide tape is used for seaming and sealing fiberglass duct board and duct wrap to enhance appearance and maintain vapor barrier integrity. It has a high tack rubber-based adhesive and shiny aluminum backing with excellent reflective properties (heat, light). Roll contains 50 yards. Recommended minimum application temperature is 40ºF (4°C). This low-VOC product has been tested in accordance with UL-723 (ASTM E-84).