Duct Reducer For Nominal Duct Diameter 10 in 13 in Inlet Diameter 13 in Inside Diameter 13 in Overall Length 9 in Product Type Reducer Weight 4 lb Material Thickness 20 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 6 450 cfm Outlet Diameter 10 in Overall Height 11 in Overall Width 13 in End Type Quick-Fit