Duct Clamp For Nominal Duct Diameter 11 in Product Type Duct Clamp Material Thickness 18 ga Material Steel Overall Length 11 in Inside Diameter 11 in Seal Material Nitrile Weight 0.7 lb Shape Round Standards Not Applicable Outside Diameter 11 in Finish Galvanized Compatible with Series QF Compatible with Brand Nordfab Series QF Maximum Temperature Rating 158 Degrees F