3 Inch Toilet Flapper, Compatible with Gerber Toilet Flapper 99-788, Toilet Tank Flush Valve 3 in. Rubber Stopper Replacement Kit, Easy-to-Install Toilet Bowl Seal Repair Parts, Blue (Pack of 2)
Gerber AV-21-804 Avalanche&Trade; (1.6Gpf/6.0Lpf) Toilet Parts
Gerber Toilet Repair Parts
Toilet Flappers Replacement Compatible for GA715014-GEG1 (Transparent) - - Amazon.com