DuraGuard® is an Antimicrobial Property Built into the Toilet Seat to Inhibit the Growth of Bacteria; Commercial-Grade, Heavy Duty Plastic with Molded-in Color Resists Wear, Chips and Stains; Check Hinges Prevent the Seat from Going 11 Degree Beyond Vertical; 300-Series Stainless Steel Posts and Pintles Resist Corrosion; Made with Eco-Friendly Materials and Processes; STA-TITE® Commercial Fastening System Never Loosens; Reduces Installation Time, Eliminating Callbacks for Loose Seats; Fits most Manufacturers Elongated Toilets; Made in USA 14-1/2" x 18-9/16", Non-Self-Sustaining Check Plastic Hinge, White, Plastic, Open Front, Elongated, Heavy Duty, Commercial Toilet Seat without Cover