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The 5403 - Universal Adjustable 3" Flapper is available online, from our following retail partners.

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5403 - Universal Adjustable 3" Flapper

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Stop a running toilet and optimize your flush with the 5403 Water-Saving Flapper
Universal – Fits most 3” flush valves
Fits American Standard®, Kohler® Cimmaron, Toto® and other toilets
Easy to install
Adjustable dial for flush performance and water savings
Long lasting silicone seal
Chlorine and hard water resistant**
Solid frame for the best seal- no twisting
10 year warranty

Best for newer toilets, 1.28 & 1.6 GPF (after 1994)

Quickly solve common leak and running toilet problems with Fluidmaster®’s 5403 3” Water-Saving Adjustable Flapper. Made for newer 3” flush valve toilets, this model is a fast and simple install. The adjustable flapper arms, and universal design ensure it will quickly fit most 3” flush valve toilets. Customize your flush and save water with the adjustable dial, simply turn to adjust for more or less depending on your needs. This long lasting flapper also features a durable silicone seal that lasts up to 10x longer than standard designs. Eliminate leaks and save water with quality you can trust, the Fluidmaster® 5403 Universal Adjustable 3” Toilet 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.