Featuring a flexible design, the 503 flapper offers the versatility of fitting both flush valves with or without mounting ears. This flapper fits most 2 in brass and plastic flush valves and is suitable for 3.5 gal per flush toilets. Only Fluidmaster has toilet flappers with built-in Microban protection. Not just simply a coating, Microban is specially built into the construction of our flappers to fight flapper breakdown and combat bacteria.
