Hose Adapter For Nominal Duct Diameter 17 in Inlet Diameter 17 in Material Stainless Steel Product Type Hose Adapter Material Thickness 20 ga Overall Length 5 1/2 in Maximum Pressure Rating 42 in wc Weight 3.32 lb For Duct Height 17 in Flange Inner Diameter Not Applicable For Duct Width 17 in Flange Outer Diameter Not Applicable Maximum Airflow 11 030 cfm Inside Diameter 17 in Number of Holes on Flange Not Applicable Overall Width 17 in Bolt Circle Diameter Not Applicable