American Standard Madera 1.1 – 1.6 gpf (4.2 – 6.0 Lpf) 15" Height Back Spud Elongated Bowl - AMS-2624001

No tank. The Madera 2624001 is a floor-mounted flushometer bowl, so it needs a flush valve supplied separately. It takes a 1-1/2 inch (38 mm) inlet spud on the back of the bowl, and it operates anywhere from 1.1 gpf to 1.6 gpf (4.2 to 6.0 Lpf), so the flushometer you pair with it has to be set within that range. The seat is not included either.

Back spud. The inlet is on the rear of the bowl at 1-1/2 inches (38 mm), which means it pairs with a back-spud flushometer or a concealed valve behind the wall. If your existing valve drops down to the top of the bowl, that is a top spud bowl and this one will not line up.

It works on either a 10 inch (254 mm) or 12 inch (305 mm) rough-in, measured from the finished wall to the center of the waste outlet. That covers most commercial and older retrofit layouts without having to move the closet flange.

No. At a standard 15 inch (381 mm) rim height, this bowl sits below the range ADA-compliant water closets are set at, which is why American Standard also builds the Madera in a taller right-height version. Use the 15 inch bowl for standard-height stalls, children's or general-use restrooms, and specify the taller Madera bowl where an accessible fixture is called for.

It carries a Maximum Performance (MaP) score of 1,000 grams at 1.1 to 1.6 gpf, which is the top of the MaP scale for solid waste removal. The trapway is 2-1/8 inches (54 mm) and fully glazed, and flushing is direct-fed siphon jet. That combination is what schools, stadiums and office buildings spec for heavy daily use.

Yes. The bowl is rated as a High Efficiency Toilet across the 1.1 to 1.6 gpf (4.2 to 6.0 Lpf) range, so a 1.28 gpf flushometer falls inside its working window and it still holds the 1,000 gram MaP score at the low end of that range. You set the volume with the flush valve you choose, not the bowl.

Elongated. The Madera 2624001 is an elongated bowl, which is what most commercial codes and specs call for in public restrooms. If your stall depth was laid out for a round front, check the clearance to the door swing before you swap.

The bowl has a built-in condensation channel, which catches moisture forming on the china and keeps it off the floor. That matters in humid restrooms on cold supply water, where sweating fixtures create slip complaints and stained grout.

It is sold in white, ordered as American Standard part number 2624001.02. Only the bowl ships, so a seat and a flushometer go on the order separately.