The Bottle Trap 1-0.25" from American standard is a luxury performance toilet featuring a concealed trap-way and one-piece toilet design that is easier to clean, visually appealing, and works magnificently. A dual-flush toilet allows each user to choose between either a full or a partial flush. The partial flush uses 37.5% less water and is a great way to be fiscally and environmentally conscious. The right height design is 16.5 inches tall and the elongated bowl helps to give additional comfort. Their innovative ever clean surface is included and helps inhibit the growth of bacteria, mildew, and mould. Features quality, long-lasting vitreous china right height® elongated siphon action dual flush bowl with smooth-sided, concealed trap way meets EPA watersense® criteria (pending)everclean® surfacepowerwash™ rim scrubs bowl with each flush design coordinates with studio and boulevard lavatories10 year warranty on entire toilet includes duroplast slow close toilet seat and cover with concealed seat ring.