The Fluidmaster universal 2 and 3 in super flapper is the newest and most universal toilet flapper in our flapper line. The super flapper is the go-to choice, taking the guessing out of what size flapper is needed in the tank. When you don't know what size flapper you need this fits both 2 and 3 in toilets. This can be converted into a 2 in flapper or 3 in flapper the only one of its kind on the market. This super flapper sets the standard as the easiest installation possible for a flapper. Depending on your flush needs the water adjustment feature with the easy-to-turn adjustment dial allows for the customization of water usage inside the tank. This universal design is built to adjust and work with most toilets and brands using two-piece toilets and flush valves.