Engineered to ensure a proper fit on one- and two-piece toilets, this Brevia™ seat complements a wide variety of round-front toilet designs. This soft-close toilet seat features innovative technology that prevents noisy slamming. Unique Grip-Tight bumpers hold the seat firmly in place and prevent shifting. Kohler® Toilet Seat, Brevia™, Round Bowl, Slow Close Hinge, 16-5/8 in Bolt to Seat Front, Closed Front, Plastic Hinge, 5-1/2 in Mounting Hole, 14-3/16 in Width, 7/8 in Height, Plastic, White