Subscribe to our Newsletter. Kohler K-4650-96 – Toilet Seat Accessory. Lustra Elongated Open-Front Toilet Seat Product Specifications. Hinge Center to Center: 5.5. Width: 14.19 in. Width (Inside): 8.44 in. Toilet Seat Lid Included: Yes. Approved for Commercial Use: Yes. Country Of Origin: USA. Made in America: Yes. Where possible, we note damage and list missing accessories. These factors are reflected in the pricing of the item. Simply send us a message, and a resolution will be quick to follow.