PRO54 Fluidmaster Pro Series Universal 2" Flexible Frame Chlorine-Resistant Toilet FlapperThe Fluidmaster PRO54 Pro Series Universal 2" Chlorine-Resistant Toilet Flapper. Trust this flexible frame design for a secure seal with every flush. Built to fit toilets with 2" flush valves. Upgrade a faulty flapper with this Pro Series chlorine-resistant toilet flapper Universal design to fit most 2" flush valves Flexible design fits on flush valves with, or without mounting ears Chorine and hard water resistant durable build Kink-free metal chain to avoid flapper hang-up Built-in Microban technology for durability 5 year warranty