R604221-01 | Door Switch/Interlock Switch | Armstrong Furnace Product Type_Assembly Vestibule EI Series 2B **Our HVAC supply store -

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protecting against data loss and equipment damage

Semi-Flexible drive shaft connects to set point knobs

Hydro Separator 548 1 Inch Steel NPT Female Union 150 Pounds per Square Inch 32-212 Degrees Fahrenheit

minimizing downtime and ensuring a swift return to optimal system performance

R604221-01 | Door Switch/Interlock Switch | Armstrong Furnace Product Type_Assembly Vestibule EI Series 2B **Our HVAC supply store -Armstrong 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