The M-101526-F31 Flushmate System is a complete pressure-assist flush system for 503 series tanks. It fits all porcelain manufacturers EXCEPT Kohler tank 4404 and 10” rough-in fixtures.
The M-101526-F31 Flushmate System includes:
It DOES NOT fit 10” rough-in tanks, only 12” rough-in tanks. (“Rough-in” refers to the distance from the wall to the bolts at the center of the drain.)
Flushmate vessels and components do not retrofit into gravity type toilets. They are only used with Flushmate-equipped toilets.