The Fluidmaster 5403 Water-Saving 3 '' Toilet Flapper ordinary oozy and running toilet problems, while efficiently using water. water and money with the 5403 's adaptable water dial, to promote expeditious use of water per thrill, while the unbroken frame build prevents bending for a battlemented seal. Featuring a highly long silicone seal that lasts 10 times longer than rhythmic flappers, a corrosion-resistant material, and a 10-year warranty. Easily and upgrade overage, unsound and oozy flapper models. Best for 1.28 HET and 1.6 GPF toilets with a 3 '' thrill valve. combining with a Fluidmaster Toilet Fill Valve for hearty fill and thrill optimization. The Fluidmaster 5403 Universal adaptable 3 '' Flapper is to be an expeditious and lasting solution to upgrade your 3 '' thrill valve toilets performance.