Toto Drake II 1G Toilet Tank Only, 1.0 GPF, Ebony - ST453U#51 ERU4_D0HFN81

By marrying superior performance to exceptional maintenance, TOTOs new 1.0 gpf Double Cyclone flushing technology redefines the standard of excellence for high-efficiency flushing technology in the plumbing industry. TOTOs 1.0 gpf Double Cyclone Flush Engine will satisfy the water efficiency, hygiene and maintenance demands of the even worlds most discriminating green homeowners and trade professionals with its concave rim design and ingenious bi-directional water channels, which result in the first HET that cleans itself with every flush with only 1.0 gpf water consumption.