and push-rods must be sized and ordered separately based on your specific throw requirements

Ensure the mounting surface is clean and the disc has direct contact with the heated air or surface for accurate thermal response

Noise Reduction: Properly seats the motor to dampen mechanical resonance and vibration during operation

self-adjusting PTFE V-ring sets

The MARS 39004 is a professional-grade 390 Series SPDT Changeover Switch designed for automatic seasonal transition in hydronic heating and cooling systems

Robertshaw 41-408 Hot Surface Ignitor and push-rods must be sizedThe Robertshaw 41 408 Hot Surface Ignitor is a high performance silicon carbide furnace igniter engineered for precision in HVAC gas ignition systems. Built with high purity recrystallized silicon carbide, this 120V HSI replacement offers superior thermal and physical strength, maintaining stable electrical properties even under extreme cycling conditions. Featuring a Norton 271N factory configuration, it is designed for a rapid 17 second heat up time