Johnson Controls T-4000-2139 Cover Always replace like-for-like using the

Always replace like-for-like using the S8402-028 to maintain system integrity

This gas furnace safety control serves as a direct OEM component for York

this auto-reset limit switch features a critical temperature profile with a 130°F opening setpoint and a 100°F closing setpoint

This item is not

Johnson Controls T-4000-2139 Cover Always replace like-for-like using theThe 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