Seat only measurements: 14-3/4" L x 15-7/8" W (front to back).
Front bolt center-to-center is 5-1/2".
Total thickness including seat, lid, and bumpers is 2-1/4".
The classic shape of this toilet seat is formed from molded wood that is sealed with a Dresden Blue finish for lasting durability. Adjustable plastic hinges allow for easy installation on standard round toilet bowls.