Johnson Controls T-4000-3142 Plastic Cover

Upgrade your pneumatic control interface with the Johnson Controls T-4000-3142, a professional-grade white plastic thermostat cover engineered for horizontal mounting applications. Designed specifically for the T-4000 series, this Johnson Controls thermostat cover features a built-in thermometer and a single set point window, providing immediate visual feedback for pneumatic room thermostats without requiring cover removal. Built to withstand the rigors of commercial mechanical rooms, the high-impact plastic construction is vibration and shock resistant, ensuring long-term protection for your sensitive bimetal sensing elements.

The T-4000-3142 is essential for maintaining system aesthetics and protecting horizontal mounted thermostats from unauthorized adjustment or environmental debris. As a standard replacement part in many Johnson Controls HVAC systems, it maintains the professional appearance of your facility with the official logo while offering the functional transparency needed for rapid set point verification. This replacement pneumatic cover ensures that your 1-pipe or 2-pipe T-4000 series instruments remain calibrated and protected in high-traffic environments.

• Enhanced Durability: Specifically fabricated from high-impact plastic to be vibration and shock resistant in demanding HVACR environments.
• Instant Monitoring: Integrated Fahrenheit and Celsius thermometer allows for quick temperature checks at the thermostat interface.
• Set Point Visibility: Features a single set point window for easy monitoring of current control parameters.
• OEM Compatibility: Exact fit for the Johnson Controls T-4000 series, replacing damaged or aged covers without modification.

Does this cover work with vertical T-4000 thermostats?
No, the T-4000-3142 is designed strictly for horizontal mounting. For vertical applications, a different model in the T-4000 accessory line is required.

Can I use this on a dual-dial pneumatic thermostat?
This specific cover includes a single set point window. If you are servicing a dual-dial or dual-element thermostat, you may require a cover with two set point windows to ensure proper visibility and dial clearance.

Is the logo included on the faceplate?
Yes, this model features the standard Johnson Controls logo, maintaining the factory finish of your existing pneumatic control system.

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.