American Standard Portsmouth Champion PRO 1.28 gpf/4.8 Lpf 12-Inch Rough Tank - AMS-4327A104

Tank only. The 4327A104 is the china tank portion of the Portsmouth Champion PRO two-piece toilet, so you need the matching Champion PRO bowl to complete the fixture. The tank does ship with its working guts and mounting hardware: Champion flush valve, a metal shank fill valve, a metal trip lever, and EZ-Install tools with color-matched bowl caps.

1.28 gallons per flush (4.8 liters), and it meets EPA WaterSense criteria. That matters on multi-family or municipal retrofit work where rebate programs and local code require a WaterSense-qualified 1.28 gpf fixture rather than a 1.6 gpf unit.

White is the only finish offered, ordered as MPN 4327A104.020. It is vitreous china and coordinates with the rest of the American Standard Portsmouth suite, so it will match Portsmouth bowls, pedestals, and lavatories in white across a building.

It is classified as a residential product. For a gravity-flush china tank toilet it will function in light-duty settings like an office or a small hospitality room, but for high-traffic public restrooms a flushometer or a commercial-rated bowl is the better spec. It is a common choice for apartments, condos, and single-family work.

EverClean is a glaze treatment fired into the vitreous china that inhibits the growth of mold, mildew, and bacteria on the surface. It does not replace cleaning, but for property managers turning units it cuts down on staining and odor between services.

Those are the trade-exclusive upgrades on the Champion PRO version. Plastic trip levers and plastic-shank fill valves are the two parts that fail first on rental turns, so the metal versions are what maintenance crews look for when they standardize a building on one tank.