ZoneFirst MST Damper Actuator 30067439-890 this model is strictly for

this model is strictly for single-stage 1H/1C applications

Featuring 3/4" NPT male connections

and TE-6100-8 models

providing a clean SPST solid-state output rated up to 135 VAC/VDC

Direct OEM Compatibility: Verified York S1-025-41322-000 replacement ensures correct hole alignment and electrical termination

ZoneFirst MST Damper Actuator 30067439-890 this model is strictly forThe ZoneFirst MST Damper Actuator is a professional grade 24V damper motor engineered for reliable operation in forced air residential and light commercial HVAC zoning systems. This two position actuator operates on 24Vac with a high efficiency 6 watt power draw, ensuring minimal load on the HVAC zone control panel. Designed for a precise 30 second timing cycle for both opening and closing, the MST provides consistent airflow management and prevents