American Standard Colony3 1.28 gpf/4.8 Lpf 12-Inch Rough Tank - AMS-4425A104

Tank only. The Colony3 4425A104 is the rough tank half of the toilet, so you also need the matching Colony3 bowl to have a working fixture. It ships with a color-matched trip lever installed, in white. If you're replacing a cracked or leaking tank on an existing Colony3, this is the piece you order by itself; if you're building out a new opening, order the bowl alongside it.

Yes, the Colony3 4425A104 is built for a 12-inch rough-in, which is the standard spacing from the finished wall to the closet flange bolts in most North American construction. Measure from the finished wall (not the baseboard) to the center of the flange bolts before you order. A 10-inch or 14-inch rough opening needs a different bowl and tank combination.

The Colony3 tank flushes 1.28 gpf / 4.8 Lpf and meets WaterSense requirements, which is the 1.28 gpf threshold most municipal rebate programs and low-flow retrofit specs are written to. That also satisfies jurisdictions like California and Texas that cap new closet installs at 1.28 gpf.

The 4425A104 is part of American Standard's Colony family, specifically the Colony3 at a 12-inch rough. Match on two things before ordering a replacement tank: the bowl has to be a Colony3 (tank-to-bowl bolt pattern and flush valve opening are matched within a model, not across a whole family), and the rough-in has to be 12 inches. A Colony bowl from an earlier generation or a 10-inch rough opening won't take this tank.

The Colony3 tank measures 19.125 x 15.938 x 9.563 inches. The 19-1/8 inch figure is the widest dimension, so check that against alcoves, adjacent vanities, and side walls before you commit, especially in a tight multi-family bath where a 30-inch water closet compartment leaves little slack once the tank sits back at a 12-inch rough.

The Colony3 uses a 3-inch flush valve, which is the wide valve size that dumps the tank fast enough to carry waste on a reduced volume. It's using 20 percent less water than a standard 1.6 gpf fixture. The flush valve size is the spec worth checking when you compare low-consumption toilets, since a 2-inch valve on the same 1.28 gallons moves the water more slowly.

The Colony3 is an American Standard builder-grade fixture, aimed at residential and light commercial work: apartments, single-family, tenant turns, hospitality guest baths. Vitreous china wipes down easily for housekeeping. For a heavy-use public restroom, a flushometer bowl with a flush valve is the usual specification instead of a tank type toilet, since there's no tank refill cycle to wait through between users.

White is the only finish, sold as MPN 4425A104.020. The trip lever ships color matched to the china, so nothing extra needs specifying on the order. If you're patching one tank into a row of existing Colony fixtures, white is the standard American Standard body color those were almost certainly specified in.