Johnson Controls T-4000-3139 Plastic Cover technicians can maintain optimal burner

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

The zip nut allows for rapid positioning

you can replace a 110V

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

technicians must verify the integrity of the combustion blower orifice

Johnson Controls T-4000-3139 Plastic Cover technicians can maintain optimal burnerThe 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