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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
As a replaceable cartridge style valve
By maintaining constant radial pressure against the moving stem
which is critical for system performance
What are the wiring colors
Zonefirst ZDS-22X18 22WX18H Parallel 24V 2-Pos S/R Refrigerant As a replaceable cartridge styleThe Zonefirst ZDS 22X18 is a professional grade motorized zone damper engineered for precision airflow management in rectangular HVAC ductwork. This 22W x 18H side mount damper features parallel blade operation and is driven by a 24V spring return (S R) motor, ensuring a fail safe position in the event of power loss. Constructed with a heavy duty extruded aluminum frame, the ZDS series utilizes 3 inch blades pivoting on self lubricating bushings to
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