NORDFAB 8010000951 Round 45 Degree Elbow, 4 in Duct Dia, Galvanized Steel, 24

45 Degree Elbow, For Nominal Duct Diameter 4 in, Inlet Diameter 4 In., Material Steel, Overall Length 6 1/2 in, Product Type Elbow, Material Thickness 24 ga, Weight 1 lb, Maximum Pressure Rating 42 in wc, For Duct Height 4 in, Shape Elbow, End Type...