Oatey Company 2in. Sure Vent Air Admittance Valve 39220
Air admittance valve For use as a secondary vent Opens and closes as needed by building's plumbing system Use as an air inlet source One size approved to handle up to 4" vent pipe Complies to ASSE standard 1050 Complies with ANSI/ASSE 1051 2" Length: 2Width: 3Height: 2.