Tank - Briggs 4930 or 4920 Color:Cafe Brown It's not as simple as

It's not as simple as just replacing the tank lid

St Thomas Creations 6071

Lid Size: 19 7/8" x 8 5/8"

Lid Part Number:   RP78253

is the same shape and size

Tank - Briggs 4930 or 4920 Color:Cafe Brown It's not as simple asManufacturer: Briggs Tank P N: 4930 or 4920 Rough In: 12" Bolt Width: 5. 5" Flush Valve Diameter: 2. 5" Gallons per Flush: 1. 6 or 3. 5 Internal parts and Briggs 7421 tank lid available separately. Why 1. 6 or 3. 5 GPF? Briggs made this originally as a 3. 5 gallon per flush toilet, and then during the changeover to 1. 6, they kept the porcelain the same and just changed out the internal parts to restrict the amount of water that would fill up in the