Madera 1.1 – 1.6 gpf (4.2 – 6.0 Lpf) 15" Height Back Spud Elongated EverClean® Bowl With Bedpan LugsThe floor mounted Madera Back Spud Elongated Toilet Bowl operates between 1. 1 1. 6 gpf and meets high efficiency toilet standard with used with a high efficiency flush valve. The EverClean antimicrobial surface protects against mold, mildew, odor and stain causing bacteria. Factory flush tested and received a MaP score of 1,000 grams when paired with an American Standard flush valve.