ZoneMaster 6-Inch Normally Closed Motorized Damper — Power Open/Spring Close 24V Vent Damper, No Transformer (ZC206X)

* PRECISION AIRFLOW CONTROL: The Suncourt ZoneMaster Motorized Damper controls airflow in 6" HVAC zoning, fresh air intake, and make-up air applications—improving air quality, comfort, and energy efficiency. The damper is Normally Closed (Power Open), remaining closed when unpowered and opening when powered. * ADJUSTABLE CUSTOM AIRFLOW: The 6 inch duct damper features a patented 0°-90° adjustable coupler, allowing fine-tuned airflow control in both powered and unpowered positions. * SEAMLESS INTEGRATION: The backdraft damper is designed to work with existing zone control systems or any 24VAC power source (transformer not included). * DURABLE & EASY INSTALLATION: The 24V zone control damper features a simple two-wire installation and a free-wheeling motor coupling to extend motor life. * SAFE & RELIABLE: Delivering trusted performance since 1988, Suncourt motorized vent dampers are backed by a 3 year warranty.