Details: The Fluidmaster 5403 Water-Saving 3” Toilet Flapper solves common leaky and running toilet problems, while efficiently using water. Save water and money with the 5403’s adjustable water dial, to promote efficient use of water per flush, while the solid frame build prevents bending for a secure seal. Featuring a highly durable silicone seal that lasts 10 times longer than regular flappers, a corrosion-resistant material build, and a 10-year warranty. Easily replace and upgrade old, corroded and leaky flapper models. Best fit for 1.28 HET and 1.6 GPF toilets with a 3” flush valve. Consider combining with a Fluidmaster Toilet Fill Valve for complete fill and flush optimization. The Fluidmaster 5403 Universal Adjustable 3” Flapper is built to be an efficient and long-lasting solution to upgrade your 3” flush valve toilets performance.