Product Features: Round-front toilet seat with lid – designed to complement a wide variety of round-front toilet designs Made from extra heavy duty plastic Secure mounting assembly while keeping installation fast and easy Complete with color-matched hinges Product Specifications: Height: 2-1/4″ (measured from rim of toilet fixture to the highest point on the seat) Overall Length: 16-7/8″ (measured from the back of the hinges to the front most part of the seat) Overall Width: 14-5/16″ (measured from left most point to the right most point on the seat) Inside Length: 10-3/16″ (measured from the back to the front of the inner opening of the seat) Inside Width: 8-5/16″ (measured from the left edge to the right edge of the inner opening of the seat) Distance Required Between Installation Holes: 5-1/2″ Made from plastic