Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve Fix noisy, slow filling valves with the quietest, most powerful toilet fill valve on the market! Easy-to-install PerforMAX design Universal fitting most toilet models Height adjusts easily between 10  15 Adjustable roller-clamp controls water usage Replaces outdated, inefficient, or noisy fill valve designs 7 year warranty PerforMAX technology achieves 2X greater refill rate, while saving water usage Replaces outdated, inefficient, or noisy fill valve designs 7 year warranty PerforMAX technology achieves 2X greater refill rate, while saving water usage