The Fluidmaster 513A 3 In. Universal Toilet Tank Flapper is built to last. Solid construction from corrosion resistant materials and the durable silicone seal promote long life and lasting performance. Included with Mansfield and Cato toilet brand adapters. A standard 10-year warranty is included. This model features fast and easy installation that saves time and quickly upgrades your toilet water usage per flush. An adjustable toilet repair part built to replace many toilet flapper brands including Mansfield, Toto, American Standard, Kohler, Glacier Bay, Gerber and more. Suitable for 1.28 HET and 1.6 GPF models with a 3 in. toilet flush valve. The solid frame secures a proper seal, while the adjustable dial maximizes your toilets performance. Upgrade your toilets water usage and save money with this durable design.