Johnson Controls T-4000-2142 Plastic Cover

The Johnson Controls T-4000-2142 is a professional-grade horizontal pneumatic thermostat cover designed specifically for the T-4000 series. This beige plastic thermostat cover facilitates precise environmental monitoring and adjustment in commercial HVAC pneumatic control systems. Engineered for horizontal mounting, it features an integrated Fahrenheit and Celsius thermometer and a single setpoint window to ensure clear visibility of system parameters. The faceplate is constructed for durability in high-traffic mechanical environments and includes the official Johnson Controls logo for consistent labeling of building automation components. As a direct replacement part, the T-4000-2142 ensures proper ventilation for internal bimetal sensing elements, maintaining the calibration accuracy required for modulating actuators and valves without interference. This thermostat accessory is essential for maintaining the operational integrity and aesthetic uniformity of existing pneumatic installations where exposed setpoint access is required by facility staff.

• Precise Monitoring: Includes a factory-calibrated thermometer for immediate room temperature verification.
• Operational Accuracy: Features an exposed setpoint window for rapid adjustment of bimetal sensing elements.
• Industrial Durability: Molded from impact-resistant plastic to withstand the rigors of mechanical rooms and industrial hallways.
• OEM Compatibility: Guaranteed fit for Johnson Controls T-4000 series horizontal pneumatic thermostats.

Is this cover compatible with vertical thermostats?
No, the T-4000-2142 is designed specifically for horizontal mount configurations. Vertical models require a different orientation to ensure the thermometer and logo are correctly positioned.

Does this include the mounting screws?
Standard replacement covers typically utilize existing #4-40 hex or Torx tamper-resistant screws. If your original hardware is missing, these must be sourced separately.

Can this be used on dual-dial pneumatic units?
This specific model features a single setpoint window. For dual-dial or dual-element thermostats, a compatible dual-window cover from the T-4000 series must be used to ensure proper clearance and visibility.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.