American Standard Commercial Heavy Duty Open Front Elongated Toilet Seat - AMS-5901100

No lid. The 5901100 is an open front seat without a cover, which is the configuration most commercial and institutional restrooms specify. If you need a closed front seat with a lid for an office or guest restroom, this is not it.

Bottom mounting hardware ships with the seat, so you don't need to source bolts separately. Bottom mount means the fasteners are accessed from underneath the bowl rim rather than from the top, which is the usual arrangement on conventional two-bolt elongated commercial bowls.

It has been tested to a 500 lb static weight load. For high-traffic public restrooms, schools, or stadium facilities where seats get abused, that load rating plus the stainless steel check hinges are the two specs that matter for how long the seat lasts in service.

Stainless steel check hinges. That matters in a wet public restroom because plated or plastic hinge hardware is the first thing to corrode or snap under daily cleaning chemicals and heavy use. Check hinges also hold the seat position rather than letting it swing free.

Polypropylene plastic. It is a solid molded plastic seat rather than a molded wood or enameled wood seat, so it won't chip or delaminate at the edges the way a painted wood seat does when it gets wiped down repeatedly.

Open front seats like the 5901100 are what public and institutional restrooms typically specify, and many plumbing codes require an open front (no lid) seat in public facilities. Closed front seats with lids are generally used in private residential and hotel guest bathrooms. If you are outfitting a school, office core restroom, or public facility, open front is the one to order.

White is the only finish offered, under part number 5901100.02. That is the standard match for white vitreous china commercial bowls, so it will blend across a fleet of fixtures in a building where every restroom is standardized.