Johnson Controls T-4000-3139 Plastic Cover Precise 210°F Setpoint: Fixed temperature

Precise 210°F Setpoint: Fixed temperature calibration prevents drifting

The zip nut allows for rapid positioning

it provides the necessary phase shift for split-phase motors to maintain optimal torque and energy efficiency

technicians can maintain optimal burner efficiency and safe combustion performance during system commissioning or routine troubleshooting

Johnson Controls T-4000-3139 Plastic Cover Precise 210°F Setpoint: Fixed temperatureThe Johnson Controls T 4000 3139 is a professional grade horizontal pneumatic thermostat cover designed specifically for the T 4000 Series room thermostats. Engineered for demanding commercial environments, this white plastic cover provides a clean, uniform look for horizontal mounted controllers where a blank faceplate cover is required. As a genuine Johnson Controls replacement part, it ensures a precise fit for single or dual element sensing units