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Unitized Structural Glazing System A unitized curtain wall system is one in which the framing members are pre assembled in a shop facility into units which are typically one lite wide and one story tall.
Wall sections: Curtain walls and glazing systems. Curtain wall refers to any cladding system that is hung from the structural frame. See my curtain wall essay for more details. On the other hand, it is most often associated with gridded systems of metal mullions and rails (mostly aluminum) and glass.