The Fluidmaster® 400CCR Fill Valve and Flapper Kit is the top choice to replace a leaky flapper and a damaged fill valve. A universal design repair kit that fits most 2” flush valve toilets in one easy to install model. Best for older 3.5+ gallons per flush toilets. Featuring the top selling most recognizable toilet fill valve worldwide, the 400A. A code approved anti-siphon fill valve, with adjustable height to fit more tanks. Also, including a solid frame flapper for a secure seal with every flush. Built durable from chlorine resistant materials with built-in Microban® technology for long lasting use. Microban® is specifically built into the flapper to fight breakdown and combat bacteria. Fix leaks, and noisy toilet problems fast, with the Fluidmaster® Fill Valve and Flapper Toilet Repair Kit.