DuraVent DuraVent 4" x 6-5/8" Inner Diameter Galvanized Restrictor Disk

DirectVent Pro Collection 4" x 6-5/8" Inner Diameter Galvanized Restrictor Disk The DirectVent Pro 4" x 6-5/8" Inner Diameter Galvanized Restrictor Disk is a component that is used in a typical venting installation. Use only in accordance with specific appliance manufacturer's installation instructions to restrict incoming combustion air. Features: Inner Diameter: 4" x 6-5/8" Restricts Incoming Combustion Air Use Only in Accordance with Manufacturer's Installation Instructions DirectVent Pro features tig...