The Fluidmaster 703AP4 Toilet Fill Valve for Glacier Bay and Niagara Flapperless Toilets is a direct OEM replacement toilet fill valve. Designed to specifically fit Glacier Bay and Niagara Flapperless Toilet models. This toilet fill valve helps increase your toilets performance with fast refill rates. Built for quick and easy installation, this fill valve is a cost effective DIY solution to common toilet fill problems. Built with quality and durability in mind, the 703A features corrosive resistant materials, a 1 year warranty and a code approved anti-siphon operation. The Fluidmaster 703A, designed to replace old, or inefficient Glacier Bay / Niagara Flapperless Toilet fill valves, while optimizing your toilets refill performance.