Common Questions Is the 3JE sleeve compatible with older Sure-Flex flanges

Specifically designed as a replacement aquastat for EGH-105

Ensuring the correct counter-clockwise rotation and voltage match is critical for maintaining system airflow and preventing compressor overheating in commercial walk-ins and reach-in coolers

Utilizing genuine HVAC replacement parts like the 20162903 ensures that the limit control matches the original equipment manufacturer’s factory specifications for safety and performance

Robust automatic gas shut-off mechanism prevents gas accumulation if the pilot flame is extinguished

Zonefirst ZDS-30X12 30WX12H Parallel 24V 2-Pos S/R 30067439-890 Common Questions Is the 3JEThe Zonefirst ZDS 30X12 is a professional grade rectangular zone damper engineered for high performance airflow management in residential and commercial HVAC zoning systems. This side mount (ZDS) model measures 30"W x 12"H and features an extruded aluminum frame with 3" parallel blades, ensuring minimal air pressure drop and smooth, silent operation. Equipped with a 24V spring return (S R) motor, this 2 wire actuator is designed for a power closed