The TOTO ST446EMNA Aquia IV Two-Piece Toilet Tank and Cover delivers efficient performance with water-saving technology. This tank is designed for use with compatible Aquia toilet bowls and features a dual flush system that lets you conserve water with every use. The lid-top chrome dual flush push button provides convenient control, while Auto Flush compatibility (adapter sold separately) offers modern convenience options. Installation is straightforward with the included tank-to-bowl gasket and hardware. Backed by a 1-Year Limited Warranty, this tank combines reliability with eco-friendly functionality for your bathroom.