Quick-Fit Sleeve For Nominal Duct Diameter 18 in Fabric Material Nitrile Fold Type Power Lock Inlet Diameter 18 in Product Type Quick-Fit Sleeve Application Commercial Overall Length 10 7/8 in Weight 7.45 lb Material Steel Maximum Pressure Rating 42 in wc Material Thickness 20 ga Overall Height 10 7/8 in Outlet Diameter 18 in Maximum Airflow 12 370 cfm Overall Width 18 in Shape Round Seal Material Nitrile Duct Compatibility Round Color Silver