The modern design of the Vortex Series PL-12228 Toilet gives a unique and contemporary look to your bathroom while assisting in water conservation. They are comprised of Grade A Porcelain and go through a special glazing process which creates a glossy, scratch resistant coating that is sure to maintain its luster for years to come, including commercial applications. This layer is also nonporous meaning it is resistant to stains as well as bacteria and fungi growth. Additionally they feature High Efficiency Flush which can save you thousands of gallons of water annually over a traditional single flush toilet. The Vortex Series Toilets come with a Limited Lifetime Warranty