Duct Reducer For Nominal Duct Diameter 8 in 9 in Inlet Diameter 9 in Inside Diameter 9 in Overall Length 7 in Product Type Reducer Weight 2.5 lb Material Thickness 22 ga Maximum Pressure Rating 42 in wc Maximum Temperature Rating 1 100 Degrees F Material Stainless Steel Seal Material Nitrile Standards Not Applicable Shape Round Gas Appliance Category Not Applicable Maximum Airflow 3 090 cfm Outlet Diameter 8 in Overall Height 9 in Overall Width 9 in End Type Quick-Fit