Designed to fit most elongated toilets, the Reveal seat combines transitional styling and advanced technology. The overhanging lid completely conceals the seat ring, creating a sleek, unified appearance. Unique Grip-Tight bumpers hold the seat firmly in place and prevent shifting. This soft-close seat features innovative technology that prevents the seat from slamming and simplifies both cleaning and installation. Kohler® Toilet Seat, Reveal® Q3™, Elongated Bowl, Quick Release Hinge, Closed Front, 5-1/2 in Mounting Hole, 13-9/16 in Width, 1 in Height, 17-5/8 in Length, 1 in Thickness, Plastic, Biscuit