Zonefirst ZDB-12X18 12HX18W Parallel 24V 2-Pos S/R Els PW 17895 Normally Closed Logic: Ensures the

Normally Closed Logic: Ensures the valve remains in the shut position during power loss for system safety

Universal Fit: Standard 3/4" NPT threaded connections for quick field replacement and installation

Robust Construction: Built to withstand operating temperatures up to 212

ensuring localized power isolation and operational reliability

you can use a capacitor with a higher voltage rating than the original (e

Zonefirst ZDB-12X18 12HX18W Parallel 24V 2-Pos S/R Els PW 17895 Normally Closed Logic: Ensures theThe Zonefirst ZDB 12X18 is a professional grade 12HX18W Parallel 24V 2 Pos S R zone damper engineered for high static HVAC environments. Built with a heavy duty extruded aluminum frame and 3 inch parallel blades, this bottom mount zone damper ensures quiet, low leakage performance in rectangular ductwork. The unit utilizes a 2 wire spring return motor rated for 24VAC, providing a fail safe open position when de energized and a powered closed state.