COMPATIBLE WITH GERBER 99-788Designed to fit 3-inch toilet flush valves and compatible with Gerber toilet part 99-788. This toilet flapper replacement is intended for toilets using a 3-inch valve opening. (Please confirm your toilet uses a 3-inch flush valve before purchasing. Not compatible with 2-inch flush systems.)

FIX RUNNING & LEAKING TOILETSCreates a secure seal on the flush valve to help stop common issues such as running toilets, tank leaks, and incomplete flushing. Replacing a worn toilet tank flapper can help restore normal flushing performance.

DURABLE RUBBER FLAPPER3-Inch Toilet flapper replacement kit is made from flexible chlorine-resistant rubber material designed for regular water exposure inside the toilet tank. The toilet stopper flapper compresses and rebounds smoothly during each flush cycle, supporting consistent sealing over time.

STAINLESS STEEL CHAIN INCLUDEDIncludes corrosion-resistant stainless steel chains with hooks for easy adjustment. Helps ensure smooth lifting and controlled closing of the flapper during flushing.

EASY DIY INSTALLATIONInstalls in minutes with no special tools required. Simply remove the old toilet flapper, attach the new one to the flush valve, adjust the stainless steel chain length, and test for proper operation. Suitable for home bathrooms and rental properties.