A floor sink is a type of floor drain primarily used as an indirect waste receptor. It is generally deeper than a standard floor drain and can have a full or partial grate, or no grate as required to accommodate the indirect waste pipes. It usually has a dome strainer in the bottom to prevent splash-back. The body material can be epoxy coated or enameled cast iron, stainless steel, or PVC. Floor sinks are found in commercial kitchens and some hospital applications.