Tank - American Standard 4021 1.6GPF Color:Bone the part number for the

the part number for the button that fits the smaller hole is 1266856

Manufacturer: VORTENS

Lid P/N: 4473

Manufacturer: Twyfords

Tank - American Standard 4021 1.6GPF Color:Bone the part number for theManufacturer: American Standard Tank P N: 4021 1. 6GPF Rough In: 12" Bolt Spacing: 6. 375" center to center Tank Only, does not include lid or internal parts. Internal parts and Lid 735121 Can be purchased separately RELIANT Model *Please note there are 2 different versions of the 4021 tank, one is 1. 28gpf and one is 1. 6gpf. The porcelain for these tanks are identical with the same bolt spacing, bolt size, and bolt location. The only difference is