Standard Round 173-0425-000 Slow Close Toilet Seat, White

Thank you for considering us for your purchase from Cool Bath Design. It is a solid plastic toilet seat that fits all standard/round toilets (16 1/2 inches from center of bolts to the front of the rim). If you measure 18 ½" then you have the elongated and we do carry this size. The seat and cover soft closes to keep it from making that slamming noise that hurts the ears. This slow close feature is also great, if you have children running around. Molded stops never have to be replaced. If you should have any questions or comments, please contact us.