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Durability: Engineered for continuous duty cycles in high-ambient commercial environments
this device operates on a fixed temperature differential
Universal Compatibility: Engineered as a direct replacement T-Stat controller for a wide range of Trane and American Standard units
Universal Compatibility: Fits standard mounting footprints for streamlined field replacement and reduced downtime
Zonefirst ZDS-30X12 30WX12H Parallel 24V 2-Pos S/R Freon Durability: Engineered for continuous dutyThe Zonefirst ZDS 30X12 is a professional grade rectangular zone damper engineered for high performance airflow management in residential and commercial HVAC zoning systems. This side mount (ZDS) model measures 30"W x 12"H and features an extruded aluminum frame with 3" parallel blades, ensuring minimal air pressure drop and smooth, silent operation. Equipped with a 24V spring return (S R) motor, this 2 wire actuator is designed for a power closed
