The Fluidmaster K-400H-001-P5 Performax® Fill Valve is engineered for high performance, featuring advanced seals for leak prevention. This fill valve is designed to fit a variety of toilet models, ensuring a reliable water supply. Its durable construction and easy installation make it a preferred choice for both homeowners and professionals. With a focus on efficiency, this fill valve helps reduce water usage while maintaining optimal flushing performance. Ideal for those seeking a dependable solution for toilet maintenance.