Featuring an 11-inch diameter and a 10

Optimized Airflow: Maintains the exact internal dimensions required for centrifugal fan efficiency and noise reduction

Common failure symptoms include intermittent system operation

and the valve can be repacked in place to minimize downtime

What is the standard power requirement for this transmitter

Resideo ZD26X12TZ Damper 321894-709 Featuring an 11-inch diameter andThe Resideo ZD26X12TZ Damper is a professional grade, rectangular zone damper designed for precision airflow management in forced air HVAC systems. Built with a heavy duty extruded aluminum frame and blades, this 26" x 12" unit utilizes a parallel blade configuration to ensure structural rigidity and a low leakage seal during operation. The assembly features a high torque 24VAC synchronous motor mounted on the 12 inch side, providing a power closed