Product Description TOTO ST743SB#03 Drake Bolt Down Tank with G-Max Flushing System, Bone (Tank Only) From the Manufacturer This G-Max Drake tank from Toto has a bolt down lid and features a 1.6 Gallon flushing system. G-Max's extra-wide 3-Inch flush valve and wide 2-1/8-Inch glazed trapway offer increased flow, drawing water into the bowl more quickly, and then away more forcefully . And with G-Max's powerful siphon jet, the system makes sure what goes down stays down. G-Max is the industry benchmark for flushing performance with features like: A larger 2-1/8-Inch glazed trapway offers increased flow, drawing water into the bowl more quickly and then away more forcefully to prevent clogging. A huge 3-Inch flush valve creates a quicker, quieter, more forceful flush. An extra large siphon jet generates unmatched power for one-flush superiority to make sure what goes down stays down. Includes toilet tank only, bowl sold separately.