Designed to fix no/slow refilling, runningand noisy toilets, the Korky QuietFill Toilet Fill Valve is more than two times quieter than other fill valves. It has a universal design to fit all brands and features a wide range of adjustability to fit most 2-piece and 1-piece toilets. The QuietFill Fill Valve is very easy to install and adjust; no tools are required. Simply remove your old fill valve or ballcock, insert your new Korky fill valveand adjust. The innovative twist-lock adjustment makes installation easy. Designed to fit more toilets, the QuietFill toilet fill valve adjusts from 7-3/4 in. to 13-1/2 in.