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This 140-200F Auto Limit Switch monitors internal air temperatures
This OEM York replacement part ensures exact electrical specifications and mounting alignment
Does this part fit older Miller or Intertherm furnaces
Durable Construction: Built to withstand high-cycling environments in professional heating system maintenance applications
Generic filters often lack the rigid framing or exact dimensions of the Nordyne 669073R
Johnson Controls T-4000-2139 Cover This 140-200F Auto Limit SwitchThe Johnson Controls T 4000 2139 is a professional grade horizontal thermostat cover designed specifically for the T 4000 Series pneumatic room thermostats. Engineered for sleek, unobtrusive installation, this beige plastic cover features a clean aluminum faceplate without a thermometer window or setpoint adjustment openings. This configuration is ideal for facilities where unauthorized tampering must be minimized while maintaining a uniform aesthetic