Johnson Controls T-4756-2141 Plastic Cover

The Johnson Controls T-4756-2141 Plastic Cover is a professional-grade replacement faceplate engineered specifically for the T-4000 Series Pneumatic Room Thermostats. Designed for horizontal mounting applications, this beige plastic cover provides a clean, secure housing for sensitive pneumatic control components without the inclusion of a built-in thermometer. It features two setpoint windows, allowing for clear visibility and access to dual-dial configurations commonly found in heating-cooling pneumatic thermostats like the T-4756 high-volume output models. The T-4756-2141 is built to withstand standard mechanical room conditions, offering essential protection against environmental debris and tampering. This HVAC thermostat accessory ensures precise fitment and maintains the professional aesthetic of the control interface. Whether you are performing routine maintenance or a full system overhaul, this genuine Johnson Controls part is the standard for commercial HVAC pneumatic controls requiring dual setpoint adjustment visibility.

Key Benefits:

• Field-Proven Durability: Impact-resistant beige plastic construction protects internal bimetal elements from environmental contaminants.
• Dual Setpoint Visibility: Integrated dual windows provide seamless monitoring of heating and cooling setpoints for high-volume output controllers.
• Standardized Compatibility: Direct replacement for T-4000 series instrument covers, ensuring a flush horizontal mount without additional modifications.
• Clean Interface: The no thermometer design is ideal for facilities where external temperature verification is handled via secondary sensors or building automation systems.

Common Questions:

Which thermostat models are compatible with this cover?
The T-4756-2141 is designed specifically for the Johnson Controls T-4000 Series, including high-volume output models like the T-4756-20xx series. It is not compatible with T-4100 or T-4600 series thermostats.

Does this cover include mounting hardware?
Yes, this unit typically ships as a thermostat cover with mounting hardware, allowing for immediate installation onto existing wall-mounted sub-bases or pipeheads.

Can this cover be used for vertical installations?
No, this specific model is engineered for horizontal mounting. The dual windows and internal alignment tabs are factory-set for a horizontal orientation to match the dual-dial layout of the thermostat.

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.