The PerforMAX fill valve and 2 in. Flapper Kit is the premium solution to make your 2 in. flush valve toilet run like new PerforMAX toilet fill valve offers high performance with adjustable tank and bowl water for full water control Fast and Easy to Install PerforMAX Water-Saving Toilet Flapper included to save water use per flush Adjustable fill valve height to fit more tanks, corrosion resistant flapper, Solid frame for a secure seal, 7 year warranty