American Standard 5901100SS.020 Heavy-Duty Commercial Toilet Seat, White Open front toilet seat Made with injection molded solid polypropylene Fits most elongated bowls Features large molded-in bumpers External check hinge with 304 Series stainless steel hinge posts stops seat 11 beyond vertical EverClean silver-based surface permanently inhibits the growth of stain and odor causing bacteria, mold and mildew on the surface. EverClean surface does not protect against disease causing bacteria. Seat cover not included