Ball Joint For Nominal Duct Diameter 8 in Inlet Diameter 8 in Product Type Quick-Fit Ball Joint Application Commercial Overall Length 14 in Weight 21.36 lb Material Steel Maximum Pressure Rating 42 in wc Material Thickness 18 ga Overall Height 8 in Outlet Diameter 8 in Maximum Airflow Not Applicable Overall Width 8 in Shape Straight Duct Compatibility Round Color Silver Maximum Temperature Rating 390 Degrees F Minimum Pressure Rating 2 in wc Inside Diameter 8 in