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The MasterFormat numbering system and titles provide a common, transparent manner to readily communicate construction item, tasks, and associated information. 2004+ Edition. Divisions are the top Level (Level 1) in the hierarchy of the classification system. 01 21 23 Installation Allowances. 01 73 19 Installation.
The MasterFormat numbering system and titles provide a common, transparent manner to readily communicate construction item, tasks, and associated information. 2004+ Edition. Divisions are the top Level (Level 1) in the hierarchy of the classification system. 01 21 23 Installation Allowances. 01 73 19 Installation.
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