Designed to maximize and complement Sloan flushometers;Universal model works with Sloan flushometers from 1.1 to 1.6 gpf;Durable, hygienic vitreous china with elongated rim;Syphonjet flushing achieves 1000g Map Scores when used with Sloan flushometers;IAPMO certified to meet or exceed ASME A112.19.2 standards;Watersense compliant when used with a WaterSense compliant flushometer