Duct Reducer For Nominal Duct Diameter 13 in 16 in Inlet Diameter 16 in Inside Diameter 16 in Overall Length 9 in Product Type Reducer Weight 7 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 9 775 cfm Outlet Diameter 13 in Overall Height 13 in Overall Width 16 in End Type Quick-Fit