The plenum-rated enclosure and 1/2" NPT nipple allow for direct mounting to electrical junctions

Precision Engineering: Balanced impeller and housing design reduce vibration and noise during heating system operation

The TB Woods 9JES Insert is a professional-grade

allowing for continuous air venting through the bucket vent

ideal for standard commercial settings

Sterling HVAC 11J28R06881 Control/Ignition Board Freon The plenum-rated enclosure and 1/2"The Sterling HVAC 11J28R06881 Control Ignition Board is the current OEM replacement engineered for Direct Spark Ignition (DSI) operation in Sterling and Beacon Morris gas fired unit heaters. Functionally identical to the legacy J28R06881, this updated controller is optimized specifically for heating only applications, having eliminated the unnecessary cooling relay found on older universal boards to streamline HVAC system reliability. Designed as a