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Manufacturer: TOTO
Lid P/N: ST454 (version with 5 tabs on the underside of the tank lid
Lid Size: 16.375 x 8.25
Toilet Name:Drake II
Tank P/N: ST454
Tank Size: 16.375 x 8.25

This tank lid has been revised by Toto. There are two versions. You can identify the differences either by counting the number of tabs on the underside of your lid (5 vs 9) or by measuring. The difference is only 1/8 in both directions so it is important to measure accurately.