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Description
The ZoneMaster 8" Motorized Damper is used in 8" duct to automatically shut off or allow airflow through the duct. Normally closed means the damper is closed when power is off and opens when power is on. It runs on 24 VAC and includes a stud mount transformer. Free wheeling coupling between motor and damper shaft for long life. Housing length is 8". 24 gauge. Specify ZC normally closed or ZO normally open. Transformer included. 3 year limited warranty. Assembled in USA