For 3-1/4" x 10" duct. Spring-loaded back draft damper and bird screen keeps out unwanted outside air and critters. Galvanized steel. Baked enamel black finish for durability and long life that stands up to the elements. Not for use with dryers. No. 639: Size: 3-1/4 In. x 10 In. Color: Black Material: Galvanized Steel Pkg Qty: 1 Package Type: Box
Broan-Nutone
Model No 639
UPC 026715002641
Color Black
Material Galvanized Steel
Size 3-1/4 In. x 10 In.
United States