Best for older toilets, 3.5 GPF or more (before 1994). The Fluidmaster® 501 Universal Chlorine-Resistant Toilet Flapper is designed to be a longer lasting and high quality flapper replacement, to fit most 2” flush valves. Built tough to last in any water condition, with chlorine-resistant materials and built-in Microban®. Only Fluidmaster® has toilet flappers with built-in Microban® protection. Not just simply a coating, Microban® is specifically built into the construction of our flappers to fight flapper breakdown and combat bacteria. The solid frame ensures a secure seal, by resisting bending, or twisting during flushing, so you never have to jiggle the toilet handle again. Replace your leaky, or faulty flapper now, with Fluidmaster®’s 501 Solid Frame Universal Flapper.
** DO NOT USE IN-TANK DROP-IN TOILET BOWL CLEANERS CONTAINING BLEACH OR CHLORINE. USE OF SUCH PRODUCTS WILL RESULT IN DAMAGE TO TANK COMPONENTS AND MAY CAUSE FLOODING AND PROPERTY DAMAGE. USE OF SUCH PRODUCTS WILL VOID THIS WARRANTY. Instead, we recommend using Flush ‘n Sparkle® automatic toilet bowl cleaner.