Overview
The Johnson Controls T-4002-2137 is a high-quality nickel-plated thermostat cover designed to protect and enhance T-4000 Series pneumatic room thermostats. This durable metal cover provides a sleek, professional finish while safeguarding internal components from physical damage, tampering, and environmental factors. It features a blank, “concealed” design without a thermometer or setpoint window, making it ideal for public spaces where it is beneficial to discourage unauthorized adjustments and maintain a minimalist aesthetic.
Features
- Durable nickel-plated construction for long-lasting protection and a premium appearance
- Versatile mounting options supporting both horizontal and vertical orientations
- Concealed blank design without windows or a thermometer to prevent tampering
- Impact and vibration resistant to ensure system integrity in high-traffic or industrial environments
- Easy snap-on installation for convenient maintenance and calibration access
- Includes a faceplate for a complete, finished look on the wall
Specifications
- Brand: Johnson Controls
- Model Number: T-4002-2137
- Material: Nickel-plated metal
- Color: Nickel / Beige-toned metal
- Mounting: Horizontal or Vertical
- Display: No thermometer, no setpoint window (Blank)
- Shape: Rectangular
- Dimensions: Approximately 3.5 in x 2.0 in x 2.0 in
- Compatibility: Johnson Controls T-4000 Series (specifically T-4002 and T-4003 models; excludes T-4100 and T-4600)
Applications
- Commercial office buildings and institutional facilities
- Schools, hospitals, and government buildings
- Industrial spaces requiring robust component protection
- Public areas where concealed temperature control is necessary to prevent occupant interference
- Retrofit or replacement for existing T-4000 series pneumatic thermostat installations



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