Zonefirst ZDS-18X16 18WX16H Parallel 24V 2-Pos S/R Freon Precision Control: Utilizes floating control

Precision Control: Utilizes floating control logic for accurate 3-point positioning

Common indicators include inconsistent water temperatures

For higher pressures

One-pipe steam systems require specific venting operators such as the RA2000 1PS series

Flexible Mounting: The non-positional design and snap-off universal bracket facilitate installation in tight electrical enclosures without compromising performance

Zonefirst ZDS-18X16 18WX16H Parallel 24V 2-Pos S/R Freon Precision Control: Utilizes floating controlThe 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