Our natural bamboo wood seats have a beautiful wood grain and impeccably smooth finish. Bamboo is the ultimate "green" product and this dark bamboo seat appeals to a broad audience,. Fits in well with any style. It is sleek and stylish. Because it is made of "Green" products it also appeals to those with a concern for the environment. The hinges are a non-tarnish elegant brushed nickel adding to this classy style. The seat is elongated, fitting standard toilet bowls that measure 18.5 inches from the front of the bowl to the center of the mounting holes at the back of the bowl. Since bamboo is a natural material, the color of each seat varies slightly. All installation hardware is included to ensure easy installation and a tight fit.