Duck 2.5in. x 50yds HVAC UL 181A-O Listed Foil Tape for Fiberglass Ducts. Duck brand flex foil tape combines both the excellent sealing and protective benefits of aluminum with the superior adhesion of Duck brand duct tape. This UL 181A-O listed silver adhesive tape is approved for use on flexible air ducts and is rated for flame spreads and smoke development. The flex foil tape has application characteristics and ease of handling similar to pressure-sensitive tapes. Combines the sealing and protective benefits of aluminum with the ease of use of tape. For use with a temperature range of -20 to +200-Degree (Fahrenheit). Rated for flame spread and smoke developement. Indoor/outdoor use.
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