Rigid Duct, For Nominal Duct Diameter 12 in, Inside Diameter 12 in, Overall Length 58 3/4 in, Product Type Rigid Duct, Weight 19.8 lb, Material Steel, Material Thickness 22 ga, Maximum Pressure Rating 42 in wc, Maximum Temperature Rating 390 Degrees F, Shape Straight, End Type Quick-Fit, Color Silver, Maximum Airflow Not Applicable, Connection Type Clamp Together, Compatible Clamp Style Quick-Fit, Finish Galvanized