Zonefirst AOBD-24X8 Damper

The Zonefirst AOBD-24X8 Damper is a professional-grade automatic opposed blade damper designed for demanding HVAC zoning applications. Measuring 24 inches wide by 8 inches high, this 24Vac motorized damper features an opposed blade design that ensures balanced airflow with minimal turbulence compared to standard single-blade models. Built with a power open/power closed actuator, the motor only draws current during its 30-second transition, optimizing energy efficiency across the system. This model is a side-mount damper, meaning the actuator and end plate are mounted on the 8-inch dimension, making it ideal for installation in horizontal duct runs where vertical clearance is limited.

Constructed from extruded anodized aluminum with a stainless steel draw bar and brass linkage, the AOBD-24X8 is engineered for long-term reliability in environments ranging from -55°F to 200°F. The integrated end switches provide critical feedback to the zoning control panel, allowing for precise sequencing of equipment and auxiliary controls. With a maximum static pressure rating of 0.75" W.C., this low-voltage air control damper is a trusted selection for contractors requiring durable forced-air zoning components.

• Precision Airflow Control: The opposed blade mechanism provides a linear flow characteristic for more accurate zone balancing.
• Enhanced Durability: Corrosion-resistant anodized aluminum frame and stainless steel hardware prevent binding in high-humidity zones.
• System Feedback: Built-in end switches allow for seamless integration with chillers, boilers, or fan status indicators.
• Efficient Operation: The 24V motor consumes only 6 Watts and removes power once the 30-second cycle is complete.
• Streamlined Installation: Designed for an easy 3-inch slot insertion into existing rectangular ductwork.

Common Questions

Does this damper require a specific mounting orientation?
Yes, this AOBD model is a side-mount configuration, with the actuator factory-mounted on the 8-inch side. It is typically used in horizontal ducts where the width exceeds the height.

Can I use this with any 24V zoning panel?
This 3-wire power open/power closed damper is compatible with most standard 24Vac zoning panels. Ensure your transformer has sufficient VA capacity if slaving multiple dampers to a single zone.

Is the actuator field-replaceable?
The actuator is a standard MST series motor. While it is engineered for high-cycle longevity, it can be serviced or replaced if necessary without removing the entire damper frame from the duct.

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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.