Oatey® Sure-Vent® 1.5 in. – 2 in. 160 Branch, 24 Stack DFU Air Admittance Valve with PVC Schedule 40 adapter Size:1.5" – 2" Locks flip up to extend

Locks flip up to extend the handles and flip down to securely lock the handles at the perfect length

Ideal for drywall

it also features a back door to retrieve mail without entering the street

For Posts Measuring 3-1/2" x 3-1/2"

Oatey® Sure-Vent® 1.5 in. – 2 in. 160 Branch, 24 Stack DFU Air Admittance Valve with PVC Schedule 40 adapter Size:1.5" – 2" Locks flip up to extendThe Oatey Sure Vent 1. 5" 2" 160 Branch, 24 Stack DFU Air Admittance Valve with PVC Schedule 40 adapter is a one way valve designed to allow air into the plumbing drainage system when negative pressures develop in the piping system. Superior engineering along with stringent quality standards ensure unmatched performance. Oatey products have earned the trust of plumbing professionals for over 100 years. For use as a secondary vent PVC Schedule 40