Lambro 3-1/4 In. x 10 In. Galvanized Steel Rectangular Wall Stack Duct Pack of 5

Made of zinc-coated galvanized steel 30 Ga. galvanized steel construction 24 In. length Snap lock seam Material Galvanized Size 3-1/4 In. x 10 In. x 24 In. Type 1 Pc.