Duct Reducer For Nominal Duct Diameter 4 in 10 in Inlet Diameter 10 in Inside Diameter 10 in Overall Length 12 in Product Type Reducer Weight 3 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 3 820 cfm Outlet Diameter 4 in Overall Height 14 in Overall Width 10 in End Type Quick-Fit