Eliminates expensive secondary vent stacks

Can be used for sinks, basins, tubs, showers, vanities, and washing machines - not to be used for toilets

1-1/2" Male pipe threads

Packed 1 per box with installation instructions

Each drainage system using a Mechanical vent must have a main vent stack to atmosphere (through the roof) located so as to vent the water closet

Do not install the mechanical vent in sealed wall cavity - install in a readily accessible location

Installation limited to structures not exceeding 2 stories in height and without corrosive water