Zonefirst ZDS-18X16 18WX16H Parallel 24V 2-Pos S/R Refrigerant and all required gaskets and

and all required gaskets and O-rings for a complete internal overhaul

Precise Pressure Management: Maintains a stable 0-125 PSI setpoint even during fluctuating supply pressures up to 300 PSIG

specifically within the Defender Safety System series

Versatile Application: Suitable for a wide range of media including air

Engineered for high-duty cycle performance

Zonefirst ZDS-18X16 18WX16H Parallel 24V 2-Pos S/R Refrigerant and all required gaskets andThe Zonefirst ZDS 18X16 is a heavy duty, side mount rectangular zone damper engineered for precision airflow management in 24V zoning systems. Featuring an 18W x 16H extruded aluminum frame and parallel blades, this unit is designed for a side mount installation where the motor is located on the height dimension. The parallel blade damper design utilizes 3" blades pivoting on self lubricating bushings, ensuring silent operation and a long service life