American Standard Cadet PRO 1.6 gpf/6.0 Lpf 12-Inch Rough Tank - AMS-4188A004

Tank only. The 4188A004 is the Cadet PRO tank by itself and has to be paired with a Cadet PRO bowl to make a working toilet. If you are replacing a cracked or leaking tank on an existing Cadet PRO, this is the part you want. If you are setting a new toilet from scratch, you need to order the matching bowl separately.

Yes, the Cadet PRO 4188A004 is built for a 12 inch (305 mm) rough-in, which is the standard distance from the finished wall to the closet flange bolts on most North American installations. The rough-in is really set by the bowl, so the tank matches a 12 inch Cadet PRO bowl. If the flange on your job measures 10 or 14 inches to the wall, this combination is not the one to order.

Three: White (4188A004.020), Bone (4188A004.021) and Linen (4188A004.222). The suffix on the part number is the color, so when you are matching an existing Cadet PRO bowl in a building, order the tank with the same suffix the bowl carries. White and Bone read very differently side by side, so matching the code beats matching by eye.

The tank measures 18.938 by 16.125 by 10.375 inches. In a tight half bath or a stall with a side wall close to the toilet, check the 18.938 inch figure against your clear width before ordering, and make sure the lid can lift without hitting a shelf or window sill above.

A 3 inch (76 mm) flush valve, which is the larger of the two common sizes and dumps the tank faster than a 2 inch valve. That is what gets the 1.6 gpf (6.0 Lpf) volume moving with enough force to clear the trapway. It also means replacement flappers have to be the 3 inch type, not the standard 2 inch flapper most parts drawers are stocked with.

Metal trip lever and a metal-shank fill valve. For a property manager running a lot of units, that shank is the piece that usually cracks on a plastic valve when a tenant or a plumber overtightens the supply nut, so it is the durability difference worth knowing about on a rental or hospitality install.

It ships at 31.228 pounds of vitreous china. That is a two-hand lift and awkward to set on the bowl alone if you are working over a finished floor. On a service call, plan on setting the bowl first and lowering the tank onto the spud gasket with the bolts started by hand.

EverClean is an antimicrobial finish fired into the china that inhibits the growth of odor and stain causing bacteria, mold and mildew on the surface itself. It is not a cleaner and it does not treat the water in the tank, so normal cleaning still applies. It matters most in high traffic washrooms where staining shows up between cleanings.

American Standard classifies the Cadet PRO as a residential fixture. It suits apartments, single family, and light multi-family turns. For a high-traffic commercial washroom, a flushometer bowl with a hard-piped valve is the usual specification instead of a tank type toilet.