Hardwood toilet seat: Made of solid hardwood this seat is designed for maximum strength & durability & easily outlasts all other wooden seats. Fits over standard size toilet bowls & comes in a variety of finishes. Cross-frame design prevents splitting at stress points unlike most ordinary toilet seats. Made of sturdy polymer, the bumpers prevent rocking & keep the seat safely in place. Chrome-plating protects brass from tarnishing for years to come. Seat measures: 15 13/16 in. x 14 9/16 in. Lid measures: 14 5/16 in. x 13 1/8 in. Round shape. Chrome Bar Hinges will fit 5 1/2" to 6" boring.