With subtle styling, this Cachet seat fits most elongated toilets. Unique Grip-Tight bumpers hold the seat firmly in place and prevent shifting. This seat features innovative technology that makes it easy to install and clean. Kohler® Toilet Seat, Cachet®, Elongated Bowl, Quick Release Hinge, 18-5/8 in Bolt to Seat Front, Closed Front, Plastic Hinge, 5-1/2 in Mounting Hole, 14-3/16 in Width, 1-1/8 in Thickness, Plastic, White