A mezzanine floor is a raised structural steel platform independent of your main building structure, supported by steel columns. It creates invaluable extra floor area from wasted air space above your existing work and storage areas, economically increasing the amount of space available to you. Main Components Mezzanine Support Columns Mezzanine Floor Main Support Beams Mezzanine Floor Base Plates Mezzanine Floor Decking Mezzanine Floor Purlins (Secondary Beams) Mezzanine Floor Handrail