It is made with the longest lasting material on the market. The adjustable flapper has 8 settings to ensure it fits all TOTO models. Replaces the following TOTO flappers: THU138S, THU175S, THU331S, THU140S, THU299S, THU253S, THU277S, THU347S, THU275S, THU332S, and THU369S.
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