Johnson Controls T-4000-2141 Plastic Cover

The Johnson Controls T-4000-2141 is a commercial-grade beige plastic thermostat cover designed specifically for horizontally mounted pneumatic thermostats. This impact-resistant housing provides a professional finish for pneumatic control systems while protecting internal components from dust and debris. Engineered for the T-4000 series, the cover features a clean aesthetic with the Johnson Controls logo and a single set point window for clear visibility of user adjustments. Because it is designed without an integrated thermometer, it is the ideal choice for installations where a minimalist appearance is required or where external temperature monitoring is already established. This HVAC replacement cover ensures a precise fit over the baseplate, maintaining the integrity of the room thermostat interface. For technicians performing routine maintenance or system upgrades, this Johnson Controls thermostat accessory serves as a direct OEM replacement to restore the professional appearance of building automation system sensors in high-traffic environments.

• Direct OEM Compatibility: Specifically engineered for a seamless fit on T-4000 series horizontal thermostats.
• Durable Construction: High-impact plastic housing protects sensitive pneumatic calibration settings from tampering.
• Streamlined Design: Single set point window allows for easy setpoint verification without exposing the entire internal mechanism.
• Professional Aesthetics: The neutral beige finish and integrated logo maintain the visual standards of commercial mechanical rooms and offices.

Is this cover compatible with vertical T-4000 models?
No, the T-4000-2141 is specifically molded for horizontal mounting configurations. Using this on a vertical base will result in misaligned windows and improper fitment.

Does this unit include the mounting screws or baseplate?
This part number refers to the plastic cover only. Existing hardware or a separate mounting kit is required for installation on the thermostat base.

Can I use this cover on a thermostat with an integrated thermometer?
While it will physically fit the T-4000 frame, this specific model lacks a thermometer window, which will obscure the temperature display on units equipped with one.

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.