Toto ST454 5 Tab Version Reproduction Color:Cotton White Lid P/N: ST854

Lid P/N: ST854

Lid Bottom Maximum Dimensions: 15

Tank P/N: F78275-CS-AA or K78274

Note: Looks nearly identical to 51083 but is slightly smaller

Tank Size:  16

Toto ST454 5 Tab Version Reproduction Color:Cotton White Lid P/N: ST854Manufacturer: TOTOLid P N: ST454 (version with 5 tabs on the underside of the tank lidLid Size: 16. 375" x 8. 25"Toilet Name: Drake IITank P N: ST454Tank 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.