20297 IPS Corporation Maxi Filter Vent
- Eliminate the need for costly roof penetrations and vent piping
- For filtering sewer gas
- Lifetime limited warranty for replacement of defective valves
- Operates as two-way vent, filtering air in both directions
- Valves allow air to enter DWV systems to equalize pressure when water drains out of the system
- Will vent up to 160 DFUs on a branch and 24 DFUs on a stack