Zonefirst AOBD-12X8 Damper

The Zonefirst AOBD-12X8 Damper is a professional-grade automatic opposed blade damper engineered for precise airflow management in residential and commercial zoning applications. Built with anodized extruded aluminum, this 12" W x 8" H unit features a heavy-duty 24Vac power open/power closed actuator that provides balanced airflow control by moving adjacent blades in opposite directions. This design significantly reduces system noise and eliminates the turbulent air shifts common with parallel blade alternatives.

For service contractors, the AOBD-12X8 is designed for high-efficiency "slide-in" installation. It is a side-mount HVAC damper, with the actuator factory-mounted on the 8" side, requiring only a 3" slot cut into the existing ductwork. The integrated end switches are a critical technical feature, allowing for auxiliary equipment interlocking or providing positive proof of closure to the zoning control panel. Operating at a maximum static pressure of 0.75" W.C. and featuring a 30-second cycle time, this motorized duct damper ensures reliable performance in diverse thermal environments ranging from -55°F to 200°F.

• Enhanced Flow Control: The opposed blade design produces a more linear flow characteristic than parallel blades, ideal for modulating airflow and volume balancing.
• Durable Construction: Features a stainless steel draw bar, nickel-plated linkage, and brass hardware for superior corrosion resistance and long-term HVAC zone control.
• Simplified Wiring: Screw terminal connections on the 24V damper actuator streamline field wiring to thermostats or zone controllers.
• Lower Turbulence: Minimizes "whistling" and pressure drops, maintaining energy efficiency and quiet operation throughout the duct system.
• Verified Positioning: Built-in end switches allow for seamless integration with blower fans or status indicators, ensuring the system only operates when air paths are clear.

Can I mount this damper in any orientation?
The AOBD-12X8 is a side-mount model specifically configured with the motor on the 8" side. While the damper inserts into any standard duct, ensure the motor side is accessible for maintenance and wiring within the plenum space.

What type of signal does the actuator require?
This is a 3-wire, power open/power closed actuator. It requires a 24Vac signal to the appropriate terminals to drive the motor in either direction. It does not use a spring-return mechanism, meaning it remains in its last position unless powered.

Is this damper compatible with other zoning brands?
Yes, as a standard 24Vac component, it can be integrated with most HVAC zoning systems that support 3-wire power-driven dampers, provided the transformer capacity meets the 6VA power requirement.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.