STUDOR Mini-Vent 1-1/2 in. - 2 in. PVC Air Admittance Valve Adapter

The unique design of the STUDOR Mini-Vent provides plumbing ventilation to prevent the loss of water seals in traps without the need for costly roof penetration and vent piping. Can be used as an individual, branch, circuit or stack vent. For residential or commercial use.