Kohler K-4418-T-0 Cimarron 1.6 gpf Class Six Toilet Tank, White Please see K-3589-T Cimarron Comfort Height two-piece toilet for full details 12-Inch rough-in Class Six canister flush valve provides smooth flushing actuation, with consistent water usage, flush after flush Exclusive DryLock(TM) fast installation system prevents potential leak points during installation and throughout the life of the product Combines with the K-4309 Elongated Toilet bowl with Class Six flushing technology to create the K-3589-T Cimarron Comfort Height EB Toilet 1.6-gallon per flush Combination with Class Six flushing Techno