Product Description 504 Universal Chlorine-Resistant Long-Lasting Toilet Flapper From the Manufacturer 504 Universal Long Life Toilet Flapper. Pre-1994 Full Flush flapper. Universal design fits most toilets, including American Standard actuator units. Universal design fits most toilets, including American Standard actuator units for 3.5 gallons per flush toilets or larger Fits on flush valves with or without mounting ears Chlorine-resistant with Microban protection Strong, kink-free metal chain 5-year warranty Pre-1994 Full Flush flapper Note: This product is designed to fit toilets with 2? flush valves Chlorine and hard water resistant Pre-1994 Full Flush flapper Universal design fits most toilets, including American Standard actuator units Fits on flush valves with or without mounting ears Five year warranty