Standard elongated toilet seats fit elongated (also called oval) toilet bowls, which are about two inches longer from back to front than standard round bowls. The extra space created by an elongated toilet seat and bowl improves comfort for adults and supplies a larger target area to reduce drips and mess around the bowl. These bolt-on toilet attachments are commonly used on toilets in workplace and public restrooms.,Toilets seats bolt onto a toilet bowl and can be lifted on their hinges for cleaning and full access to the bowl. These oval or circular rings should match the bowl shape to keep the seat stable, direct waste into the bowl, and help ensure user comfort. Toilet seats can be used on a newly installed toilet or for toilet seat replacement on an existing toilet.