Features:

• Can be used as an individual, branch, circuit or stack vent
• Fits 1-1/2" and 2" pipe sizes
• Will vent up to 160 DFUs on a branch
• Will vent up to 24 DFUs on stack
• Expands architectural design limits
• Reduces the number of fire-stopping applications
• Exclusive vermin protection system
• Limited lifetime warranty for replacement of defective valves
• Residential or Commercial Use
• ANSI/ASSE 1051, ANSI/ASSE 1050, NSF 14, ETL, ICC-ES PMG-1025, C-IAPMO