Area, Gross Leasable 1 : The total floor area designated for tenant occupancy and exclusive use, expressed in square meters (square feet), measured from the centerlines of adjoining partitions and exteriors of outside walls
NFPA 101B Code for Means of Egress for Buildings and Structures, 2002 ed. https://law.resource.org/pub/us/code/ibr/nfpa.101. 2003.pdf, (Code: Means of Egress for Build and Struc - Amer) {246 NFC}