23.30.00 HVAC Air Distribution

23.32.00 Air Plenums and Chases

23.32.13 Fabricated, Metal Air Plenums 23.32.33 Air-Distribution Ceiling Plenums 23.32.36 Air-Distribution Floor Plenums 23.32.39 Air-Distribution Wall Plenums 23.32.43 Air-Distribution Chases Formed by General Construction 23.32.48 Acoustical Air Plenums

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