Rigid Duct For Nominal Duct Diameter 15 in Inside Diameter 15 in Overall Length 58 3/4 in Product Type Rigid Duct Weight 29.3 lb Material Stainless Steel Material Thickness 20 ga Maximum Pressure Rating 42 in wc Maximum Temperature Rating 1 100 Degrees F Shape Round End Type Quick-Fit Standards Not Applicable Seal Material Co-Polymer Nitrile Silicone Color Silver Maximum Airflow 8 590 cfm Connection Type Clamp Together Series QF Outside Diameter 15 in For Media Type Dust