Duct Reducer For Nominal Duct Diameter 11 in 12 in Inlet Diameter 12 in Inside Diameter 12 in Overall Length 7 in Product Type Reducer Weight 3.75 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 5 500 cfm Outlet Diameter 11 in Overall Height 9 in Overall Width 12 in End Type Quick-Fit