Engineered to ensure a proper fit on one- and two-piece toilets, this Brevia seat complements a wide variety of elongated 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.Features:Quiet-Close lid closes slowly and quietly without slamming.Grip-Tight rubber bumpers add stability and prevent shifting.Quick-Attach hardware for fast and secure installation.Color-matched plastic hinges.1 Year Limited ManufacturerDimensions: 18.63 in. long x 14.19 in. wide x 1 in. highYesAssembly Required