Overview
The Johnson Controls T-4002-2127 is a premium brushed brass thermostat cover designed for use with the T-4000 Series pneumatic room thermostats. This horizontal-mount cover provides a high-end, professional aesthetic for commercial and institutional environments while protecting the internal thermostat components from environmental factors and unauthorized handling. It features a concealed “blank-face” design, which means it lacks a thermometer and setpoint window, effectively discouraging tampering by building occupants and maintaining a streamlined appearance.
Features
- Durable brass construction with a decorative brushed finish
- Horizontal mounting orientation
- Concealed adjustment design without thermometer or setpoint windows to prevent unauthorized changes
- Compatible with T-4002, T-4752, and T-4756 series pneumatic thermostats
- Impact and vibration resistant for high-traffic environments
- Easy installation to provide a clean, finished appearance for HVAC control systems
Specifications
- Brand: Johnson Controls
- Model Number: T-4002-2127
- Material: Brass
- Finish: Brushed Brass
- Mounting Style: Horizontal
- Display: No thermometer, no setpoint window
- Dimensions: Approximately 2.1 in. H x 3.4 in. W x 2.0 in. D
- Compatibility: Johnson Controls T-4000 Series Pneumatic Thermostats
Applications
- High-end commercial office buildings
- Hotels and hospitality suites
- Historic or upscale institutional facilities
- Public spaces where tamper-resistance and aesthetic integration are prioritized
- Retrofit or replacement for existing T-4000 series horizontal pneumatic thermostat installations


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