0.8 GPF, White, Stealth Toilet Tank, Ultra High Efficiency Toilet, Large Water Surface, With Fully Glazed Trapway & Top Mount Push Bottom Flush, Innovative & Stylish, Low Profile Body, Breakthrough Patented Hydraulic Technology, Quietest Flush On The Planet, As Water Fills The Tank, Energy Is Harnessed & A Patented Air Transfer System Exerts Pressure In The Bowl's Trapway, Activated By Simply Pressing The Flush Button, All The Waste In The Bowl Is Cleared With A 1 Time, Powerful, Quiet Flush, Adaptable To Fit A Standard 12" Roughing Installation, Easily Replaces Your Existing Toilet, Lowers Water Usage & Utility Bills.