American Standard Esteem VorMax White WaterSense Elongated Chair Height 2-Piece Toilet 12-in Rough-In Size (ADA Compliant)Powerful VorMax flushing technology has been tested and proven to clean 2X better than conventional toilets CleanCurve Rim eliminates under the rim holes where dirt and build up hide EverClean fights stains on the surface Unique CleanCurve Rim design eliminates the conventional water holes under the Rim where unseen dirt and grime can build up High Efficiency 1. 28 gallons per flush 4. 8 liters per flush and meets WaterSense requirements Durable slow