Product details:

The Niagara stealth toilet tank combines innovation and style with ultra-high efficiency to go a step beyond the standard water-saving toilets currently available on the market. Its low-profile body, breakthrough patented hydraulic technology, and quietest flush on the planet have revolutionized the toilet market. ^^Its offered in round and elongated models (sold separately) and adaptable to fit a standard 12-inch roughing installation. Choose stealth to easily replace any existing toilet and lower water usage. ^^How it works^as water fills the tank, energy is harnessed and a patented air transfer system exerts pressure in the bowl's trapway. Users press the flush button to clear bowl waste with a one-time, powerful, quiet flush!.