American Standard Corsham 1.8 gpm/6.8 L/min Tub and Shower Trim Kit With Water-Saving Showerhead, Double Ceramic Pressure Balance Cartridge With Lever Handle - AMS-7428508

The Corsham tub and shower trim uses a lever handle and is ADA compliant, meeting the requirements of the Americans with Disabilities Act. The lever is the part that matters for that: it operates without tight grasping, pinching, or twisting of the wrist, which is why it works for accessible guest rooms, patient bathrooms, and multi-family units built to accessibility requirements.

Corsham 7428508 is a trim kit: the escutcheon, lever handle, tub spout, and water-saving showerhead, meaning the exposed parts that mount on the finished wall. A trim kit does not include the in-wall valve body. On new construction or a full re-pipe you order the rough-in valve separately; on a finish-only change out you reuse the valve already in the wall, provided it is the matching American Standard rough-in.

That is exactly what the Corsham trim is built around. It runs a flash pressure balance valve that compensates for sudden changes in water pressure, so when a toilet flushes or a washer fills and the cold side drops, the valve pulls the hot back in proportion instead of letting the shower run hot. It is a pressure balance device, not a thermostatic one: it holds the hot/cold ratio rather than holding a set temperature number, so the flow may dip slightly during the correction. For apartments, hotels, and dorms where fixtures share a riser, pressure balance is the usual answer.

No. Corsham 7428508 is a tub and shower trim, so it includes the diverter tub spout and is meant for an opening with a tub filler below the shower head. On a shower-only stall there is nothing to connect the spout outlet to, and capping it off is not the right fix. For a stall you want a shower-only trim kit instead, which comes without the spout and pairs with a shower-only rough-in.

Three finishes, one part number each: chrome is 7428508.002, brushed nickel is 7428508.295, and matte black is 7428508.243. The base number stays the same across all three, so the suffix is the only thing that changes when you are standardizing several bathrooms on one finish. All three carry the same lustrous finish treatment for tarnish, scratch, and corrosion resistance.

The Corsham trim uses a double ceramic pressure balance cartridge, and American Standard rates the ceramic disc valve drip-free for life. Ceramic discs are the reason: they seal disc against disc rather than compressing a rubber washer, so they do not wear into a drip the way an older washer or ball valve does. For a property manager turning units or an MRO crew that would otherwise be rebuilding shower valves on a schedule, that is the part of the spec that matters.

Matching happens on two levels here, and they are separate. Visually, the Corsham lever handle and escutcheon are a distinct style, so it will look like Corsham and not like whatever line is on the other openings. Mechanically, the trim mounts to an American Standard pressure balance rough-in valve, so if your existing openings already run an American Standard pressure balance body, a finish swap is a trim change and not a wall opening. If you are standardizing a whole property, pick one of the three finishes and carry the matching suffix, .002, .243, or .295, across the order.