https://www.homedepot.com/p/KOHLER-3-25-in-Class-Five-Toilet-Tank-Flapper-GP1039444/203178150
KOHLER 3.25 in. Class Five Toilet Tank Flapper GP1039444 - The Home Depot
Visit The Home Depot to buy Kohler Flapper 3-1/4 in. Class 5 for One-Piece Toilets GP1039444