Featuring sturdy, chip-resistant polypropylene construction and a finish that won't stain or peel, the Lustra toilet seat is ideal for commercial or institutional applications. This round, open-front seat features check hinges that allow the seat to stand at 11 degrees beyond vertical. Kohler® Toilet Seat, Lustra™, Round Bowl, Self-Sustaining Self-Sustaining Check Hinge, 16-7/8 in Bolt to Seat Front, Open Front, 5-1/2 in Mounting Hole, 14-5/16 in Width, Plastic, White