Mezzanines consist of platforms, stair units, landings, and guardrails that connect to create an extra vertical level in a facility and gain additional floor space for work or storage. Their modular design allows warehouses and other large facilities to increase their usable space without the mess and disruption of standard construction. Mezzanine platforms provide a floor for the structure. Mezzanine stairs and landings allow access to the platform from lower levels. Mezzanine guardrails create a barrier that helps prevent people and equipment from falling over the edge of the platforms.