The Fluidmaster 400A Universal Toilet Fill Valve is the top-selling and most recognized toilet fill valve worldwide. Offering quiet refill rates it is also a top solution to fix noisy toilets. Now featuring an enlarged easier to turn adjustment dial, and a pre-installed shank washer for an even faster install. The universal design ensures it will fit most toilet models, with an adjustable EZ-twist height from 9 inch to 14 inch. The 400A offers quick refill rates and replaces ballcocks and other toilet fill valves. Trusted and proven the 400A fill valve is built to last from corrosion-resistant materials for a long lifespan and features a 5 year warranty. An anti-siphon design, that won't contaminate the fresh water supply and meets code standards. For a fast upgrade to your toilet tank fill valve, choose Fluidmaster's 400A Universal Fill Valve. Recommended for 3.5 to 7 GPF toilets pre-1994.