Angle Flange Adapter, For Nominal Duct Diameter 18 in, Inlet Diameter 18 in, Material Steel, Product Type Angle Flange Adapter, Material Thickness 20 ga, Overall Length 5 in, Maximum Pressure Rating 42 in wc, Weight 15.2 lb, For Duct Height 18 in, Flange Inner Diameter 18 1/8 in, For Duct Width 18 in, Flange Outer Diameter 21 1/8 in, Maximum Airflow 12,370 cfm, Inside Diameter 18 in, Number of Holes on Flange 8, Overall Width 21 1/8 in, Bolt Circle Diameter 20 in, Minimum Pressure Rating 2 in wc
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