Dust Collection Duct and Fittings, For Nominal Duct Diameter 16 in, Inlet Diameter 16 in, Overall Length 17 in, Product Type Double Branch, Weight 19.6 lb, Material Steel, Maximum Pressure Rating 42 in wc, Material Thickness 20 ga, Maximum Temperature Rating 309 Degrees F, Minimum Pressure Rating 2 in wc, Shape Double Branch, Inside Diameter 16 in, Outlet Diameter 4 in, Angle 30 Degrees , Maximum Airflow Not Applicable, Color Silver, Connection Type Clamp Together, Environment Type Dusty