R604221-01 | Door Switch/Interlock Switch | Armstrong Furnace Product Type_Fan RG128 155C Its M8 thread size ensures

Its M8 thread size ensures secure attachment to compatible equipment

^^[Part# CMB120-3 is the same as CMB1203]^^

energy-efficient blower motor solution

This regulator features a robust aluminum construction

* **Regal Rexnord - Fasco Brand:** Backed by a trusted manufacturer known for quality and innovation

R604221-01 | Door Switch/Interlock Switch | Armstrong Furnace Product Type_Fan RG128 155C Its M8 thread size ensuresArmstrong Furnace Door Switch Interlock Switch (R604221 01) This Armstrong Furnace Door Switch Interlock Switch (R604221 01) is an essential component designed to ensure safety and proper operation of your furnace system. Engineered to meet rigorous standards, it acts as a vital safeguard, preventing the furnace from operating when the access door is open. Specifically engineered for Armstrong furnaces, this switch features a durable construction that