Vibration Isolator For Nominal Duct Diameter 4 in Fabric Material Neoprene Inlet Diameter 4 in Product Type Quick-Fit Vibration Isolator Application Commercial Overall Length 6 1/2 in Weight 2 lb Material Steel Maximum Pressure Rating 42 in wc Material Thickness 22 ga Overall Height 4 in Outlet Diameter 4 in Maximum Airflow Not Applicable Overall Width 4 in Shape Straight Duct Compatibility Round Color Black Silver Maximum Temperature Rating 194 Degrees F