Gerber 99-652 Flush Valve Comes Complete As Pictured. Other Part Numbers For This Item are. G0099652, 0099652, 99652, 99-652 UPC: 671052607525. This is a 2 inch flush valve. It's total height is about 9 1/2 inches but inside your tank it would be between 7 1/2 and 8 1/2 inches tall. It comes with the seal for inside the tank, the nut that goes under the tank to hold it on, the flapper and chain, and the replenish tube holder on top.