From geometric design fashioned into a bold, modern form, the Octave's unique lines immediately distinguishes modern bathroom environments. With chair-height and elongated dimensions, the Octave also emphasizes comfort and utility. Featuring Icera's Hyperion flushing technology, the Octave is 30-50% more efficient than most toilets. Plus, the skirted trapway facilitates cleaning, and installs easily over existing floorboards for remodeling. The Octave is EPA WaterSense-compliant, using only 1.28 gallons per flush and capable of clearing over 1,000 grams MaP in independent testing (as compared to an industry average of only 350 grams). With an oversized 2-1/8" trapway (larger than industry standard), clogging is virtually eliminated. Best of all, the flush mechanism is quiet. A premium, "silent close" toilet seat is included. The package also includes all accessories needed for in-home installation (basic tools are required), and comes with an installation guide.