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Complies to ASSE Standard 1050 and 1051
For use as a secondary vent
One size approved to handle up to 4" vent pipe
Opens/closes as needed by building's plumbing system
Sweet Spot? technology opens at -0.01 psi and seals at 0 psi and above
Complies to ASSE Standard 1050 and 1051.
For use as a secondary vent.
Oatey 39220 160 DFU Sure-Vent SCH. 40 PVC Adapter AAV 2 x 3 2-Inch B001GP2P9M