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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.
Since structural frames and curtain wall fabrication typically hold to different tolerance levels, unitized curtain walls may not always fit within the space that is allotted for them on paper. Curtain wall frame fabrication is typically held to a much tighter tolerance than steel and concrete construction.