Enhanced Efficiency: Restores optimal flow for 5-10 CFM compressed air dryers

this unit is identical in fit and function to the legacy 9D-1/2 model

ensuring reliable operation under extreme conditions

While the kit includes the mechanical clamp and hardware

reliable supplemental heat for large residential spaces

Lennox 73K20 Limit Switch 318172-701 Enhanced Efficiency: Restores optimal flowThe Lennox 73K20 Limit Switch is a critical safety component designed for furnace high limit protection and temperature regulation in residential HVAC systems. As an OEM Lennox replacement part, this switch features a 3 inch insertion depth and operates on a 130 160F automatic reset logic. It is engineered to monitor heat exchanger temperatures, maintaining a normally closed circuit that opens upon reaching the 160F high limit threshold to prevent