Skirted Design toilets also eliminate the need to reach behind the bowl to clean the nooks and crannies of the exterior trapway. No more slammed lids•TOTO WASHLET®+ upgrade compatibility: designed to work with a T40 WASHLET®+ bidet seat for seamless integration•Auto Flush compatible•Left-hand chrome trip lever•ADA, WaterSense®, CALGreen, and CEC compliant•12" rough-in•May be adapted for 14" rough-in with optional TOTO part TSU10W.28Gpf - Cot Ton The TOTO Nexus features TOTO’s TORNADO FLUSH, a hole-free rim design with dual-nozzles that creates a centrifugal washing action that assists in rinsing the bowl more efficiently.