American Standard Colony Two-Piece 1.6 gpf/6.0 Lpf Standard Height Elongated 10-Inch Rough Toilet Less Seat - AMS-221CB004

That's exactly what the Colony 221CB004 is built for. It's a 10-inch rough-in bowl, meaning the drain centerline sits 10 inches from the finished wall rather than the standard 12. If you're replacing a toilet in an older building and the closet flange measures 10 inches off the wall, this is the version you want. Measure from the finished wall surface (not the baseboard) to the center of the closet bolts before you order.

No seat is included. The Colony 221CB004 is sold less seat, so you'll need to order an elongated seat separately to finish the job. It does come with color-matched bowl caps and a trip lever, so the trim you'd otherwise chase down is already in the box.

Elongated bowl. Buy an elongated seat, not a round front, or it won't sit right on the china. Since the toilet ships less seat, that's a separate line on your order.

1.6 gallons per flush, 6.0 litres. That's the standard federal maximum flush volume, so it's a straight like-for-like swap for any 1.6 gpf toilet already in the unit. It is not a HET or WaterSense 1.28 gpf fixture, so if your jurisdiction or a rebate program requires 1.28, this isn't the one.

Standard height. The bowl rim sits at the traditional height, which is lower than a chair-height or comfort-height bowl. For a rental turn where you're matching what was already there, standard height is usually what you want. If the unit needs an ADA-compliant seat height, a standard height bowl won't get you there and you should be specifying a right-height model instead.

Two-piece, tank and bowl, shipped as the complete 221CB004 assembly. Two-piece is the easier carry up a stairwell and the cheaper long-term repair, since a cracked tank doesn't condemn the bowl. What it doesn't include is the seat and the supply line.

Vitreous china, the same glazed ceramic used across commercial plumbing fixtures. It's non-porous, so it cleans up rather than staining, and it takes hard use in a turn-over rental. American Standard positions the Colony family on the value side of its line rather than as a luxury fixture, which is why it turns up so often as a landlord and property-manager spec.

No. The Colony 221CB004 uses a PowerWash rim, which directs the flush water around the bowl to scrub it on every cycle. It's a gravity-fed 1.6 gpf tank toilet, not pressure assist, so there's no air tank to service and the flush noise stays at normal residential levels.