Jet Cap For Nominal Duct Diameter 12 in For Duct Height 12 in For Duct Width 12 in Inlet Diameter 12 in Material Steel Overall Length 20 in Product Type Jet Cap Inside Diameter 12 in Material Thickness 22 ga Weight 59 lb Maximum Pressure Rating 42 in wc Maximum Temperature Rating 390 Degrees F Finish Galvanized Color Silver Overall Height 27 in Shape Cap Connection Type Clamp Together End Type Quick-Fit Overall Width 20 in Minimum Pressure Rating 2 in wc Screen Included Yes