It is a drop-in replacement for the CS3AN series with the added benefit of superior thermal resistance

providing reliable power distribution for industrial-grade electric heater relay applications

Universal Voltage Compatibility: Operates efficiently at 440V or 370V

The Lennox 43K53 Flame Sensor is a critical OEM safety component engineered for precise flame rectification in gas-fired heating systems

Technicians can use these part numbers interchangeably for HVAC calibration tasks

BURNHAM 8026082 Sight Glass It is a drop-in replacementThe Burnham 8026082 Sight Glass is a critical OEM replacement part designed for high visibility monitoring of water levels in hydronic and steam systems. Engineered from durable Pyrex glass, this 2 3 16" circular sight glass (OD) features a 1 8" thickness with ground and chamfered edges to ensure a leak free seal within the boilers observation port. This component is essential for technicians performing routine maintenance on Burnham series boilers,