The Fluidmaster 400H-002-P10 PerforMAX® Universal High Performance Toilet Fill Valve is engineered for 1.28 HET toilets, providing superior performance and efficiency. This fill valve features adjustable height and a quiet operation, ensuring a smooth refill process. Made from durable materials, it meets industry standards for reliability and longevity. The valve is easy to install and compatible with most toilet models, making it an excellent choice for both new installations and replacements. Enhance your toilet's performance with this high-quality fill valve.