Madera chair height top spud Elongated Floor-mount commercial toilet, with an elongated flushometer bowl. This High Efficiency Toilet (HET) operates in the range of 1.1 gpf - 1.6 gpf (4.2 Lpf - 6.0 Lpf). It has a Maximum Performance (MaP) score of 1,000 grams at 1.1 - 1.6 gpf. The bowl sits at a chair height of 16-1/2" (419 mm) for accessible applications with a 2-1/8" (54 mm) fully-glazed trapway and static weight load of 2,500 lbs (1,134 kg). This toilet has a powerful direct-fed siphon jet action. The rough-in is 10" or 12".