Duct Reducer For Nominal Duct Diameter 12 in 15 in Inlet Diameter 15 in Inside Diameter 15 in Overall Length 9 in Product Type Reducer Weight 6 lb Material Thickness 20 ga Maximum Pressure Rating 42 in wc Maximum Temperature Rating 390 Degrees F Material Steel Seal Material Nitrile Standards Not Applicable Shape Round Gas Appliance Category Not Applicable Maximum Airflow 8 590 cfm Outlet Diameter 12 in Overall Height 13 in Overall Width 15 in End Type Quick-Fit Color Silver