636 Broan-Nutone Roof Vent Cap
Use with 3" or 4" round duct. Has built-in back draft damper and bird screen. Galvanized steel. Baked enamel, black finish.
No. 636: Size: 3 In. or 4 In., Color: Black, Material: Steel, Pkg Qty: 1, Package Type: Box
Sold as Unit of Measure: EACH
Minimum/Multiple Order Quantity: 1