Toto ST454 9 Tab Version Left handed 28-179 is significantly more common

28-179 is significantly more common

double check with the Mansfield 51 item first to compare

which is linked below under related items

New Lid P/N: 84077

Lid P/N: N7747

Toto ST454 9 Tab Version Left handed 28-179 is significantly more commonManufacturer: TOTOLid P N: TCU454 or ST454 (version with 9 tabs on the underside of the tank lid)Lid Size: 16. 5" x 8. 5"Toilet Name: Drake IITank P N: ST454Tank Size: 16. 5" x 8. 5" 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