Zonefirst ZDB-12X18 12HX18W Parallel 24V 2-Pos S/R Els PW 17895 ensuring consistent system pressure and

ensuring consistent system pressure and efficiency

Direct OEM Replacement: Standard McDonnell & Miller F-26 dimensions ensure no field-modifications are required during service

Unlike generic hardware

6 tons for R-22 and 1

This part number typically refers to the coil assembly with lead wires

Zonefirst ZDB-12X18 12HX18W Parallel 24V 2-Pos S/R Els PW 17895 ensuring consistent system pressure andThe 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.