Shurtape SF-682 HVAC Grade Duct Tape is a Shurflex contractor-grade metalized cloth duct tape used in the HVAC industry to seam, connect, splice, patch and seal sheet metal and flex duct, rigid duct boards, air vents, insulation, fibrous filter banks and pollution collection systems. It can also be used for waterproof packaging. The metallic coating put on the tape gives it a chrome-like look and feel. Shurtape SF 682 Duct Tape is the same tape as SF-683, but without the printing on the tape. Widths shown in dropdown are in inches. NOTES: Sizes shipped will typically be the tape industry standard metric-cut sizes, i.e. 24mm for each 1 inch of nominal tape width ordered (rolls are approximately 5% narrower than the nominal size). This product's actual size is 48mm x 55m.