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Limiting Spans - Horizontal Shaft Walls (Ceiling Applications)

2-Hours Horizontal Membrane or Metal Duct Enclosure

Triple-layer 1/2" gypsum panels Maximum Span
212CH20-34 1626mm (64")
212CH25-18 1626mm (64")
400CH20-34 1626mm (64")
400CH25-18 1626mm (64")
600CH20-34 1626mm (64")