Zonefirst AOBD-10X10 Damper 30067439-890 Standard Fitting Sizes: Features 1/2"

Standard Fitting Sizes: Features 1/2" inlet and 3/4" outlet threading for straightforward installation into existing gas lines

Field technicians often specify this furnace safety switch when troubleshooting furnace short cycling or limit circuit error codes caused by restricted airflow or failing blower motors

ensuring long-term response accuracy

handling the specific moisture output of high-efficiency 95+ AFUE equipment

Zonefirst AOBD-10X10 Damper 30067439-890 Standard Fitting Sizes: Features 1/2"The Zonefirst AOBD 10X10 is a heavy duty automatic opposed blade damper designed for precision airflow management in commercial and residential zoning applications. This 10 inch by 10 inch unit utilizes an extruded aluminum frame and blades to ensure structural integrity and corrosion resistance within the plenum. The integration of a 24Vac actuator provides high torque, power open power closed logic, ensuring the damper reaches a positive seal