Ball Joint For Nominal Duct Diameter 4 in Inlet Diameter 4 in Product Type Quick-Fit Ball Joint Application Commercial Overall Length 9 1/2 in Weight 10.19 lb Material Steel Maximum Pressure Rating 42 in wc Material Thickness 20 ga Overall Height 4 in Outlet Diameter 4 in Maximum Airflow Not Applicable Overall Width 4 in Shape Straight Duct Compatibility Round Color Silver Maximum Temperature Rating 390 Degrees F Minimum Pressure Rating 2 in wc Inside Diameter 4 in