3″ flush to floor ABS spigot, total knockout will not break apart and cannot fall down drain pipe. Strong, corrosion-resistant stainless steel ring eliminates cracked flanges. Easier installation, no need to hold knockout while hammering. Holds 5 floors (22 P.S.I.) for head test. The inside diameter of pipe can vary…
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 Do it card. Each drainage system using a Mechanical vent must have a main vent stack to atmosphere (through…