Public toilet seats feature an open-front, U-shaped design rather than the full rings found in homes. This gap is primarily a hygiene measure, reducing the seat’s front surface area to minimize direct bodily contact and keep the fixture cleaner during high-volume daily use.
Manufacturing costs also play a significant role in this design choice. Because the open front requires less material to construct, these seats are much cheaper to mass-produce, leading to substantial savings for large facilities maintaining multiple public restrooms.
Finally, the unique shape acts as a surprisingly effective deterrent against theft. Because a commercial U-shaped seat looks out of place and rarely fits a standard residential toilet, it is far less useful at home and much less likely to be stolen.