QuietFill® MaxPERFORMANCE® Toilet Fill Valve 528MP Adjustable refill delivers the right amount of water to the bowl to maintain OEM performance (adjusts from 0-40%) Fully adjustable to prevent water waste in all toilets Ideal for toilets since 1994 (1.6 gpf or less) QuietFill® MaxPERFORMANCE® Fill Valve 528MP | http://bit.ly/1nc8v9I Hi, I'm Jewels and welcome to in the tank with Korky. Did you know toilets manufactured since 1994 use less water? These toilets are known as 1.6 gallon per flush or less toilets and require an advanced fill valve with a secondary adjustment. The adjustment delivers the ideal amount of water to the bowl to ensure maximum performance with every flush. Although designed for newer toilets, MaxPERFORMANCE also optimizes water use in older toilets. Upgrade with the most universal fill valve available, the Korky MaxPERFORMANCE. With Korky, installation is easy and takes less than 10 minutes with no tools required. Height easily adjusts to your water line and a simple twist locks it into place. Korky fits all brands and tank heights. If you are looking for optimum toilet performance, the adjustable Korky MaxPERFORMANCE will deliver what you are looking for. Korky, the name trusted by the pro for over 50 years.