A sheet metal duct is internally lined with one-inch black acoustical insulation and routed above a ceiling plane. A volume damper is integrated into the duct run for airflow control. The duct neck size is determined per project schedules, and the run extends to connect with the return or exhaust system.
1" BLACK ACOUSTICAL LINER VOLUME DAMPER CEILING 1. SHEET METAL DUCT. SEE PLANS FOR SIZE. 2. NECK SIZE PER SCHEDULE. 3. EXTEND AND CONNECT TO RETURN/EXHAUST SYSTEM. NOTES: 1 2 3
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