The assembly comprises a framed gypsum board ceiling header tied to a suspended acoustical ceiling system with a six-inch vertical offset. Gypsum board finish components are designated by specification identifiers 09 21 AB and 09 58 C, while the acoustical ceiling grid is marked with specification 09 51 00. The ceiling suspension wire anchors the acoustical panel system adjacent to the framed bulkhead. The framing members maintain standard clearance for interior wall and ceiling finishes in the lobby.
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