Mezzanine floor is an intermediate level or platform within a building that is open to the floor below. It is typically located between the main floors of a building and is used to create additional usable space for various purposes, such as storage, offices, or retail displays. Mezzanine floors are supported by columns and are accessed via stairs, ladders, or sometimes elevators. They are commonly found in warehouses, retail stores, manufacturing facilities, and office buildings where there is a need to maximize vertical space without expanding the footprint of the building.