The leader in clog-free performance features the industry’s widest trapway and flush valve that produces a faster, more powerful, yet quieter flush. The Champion® 4 toilet can move a 70% larger mass than the industry norm, so it virtually eliminates clogging. And its EverClean® surface stays cleaner, longer.Combination bowl and tank, less seatVitreous chinaEverClean® Surface4" piston action Accelerator™ flush valve2-3/8" fully-glazed trapwaySiphon action bowlSweeping pier on bowl2 color-matched bolt capsSpeed Connect® tank/bowl coupling system100% factory flush tested10 year warranty