Description
The Johnson Controls T-4000 -2144 is a vertical beige plastic cover for use with pneumatic thermostats only. Those are thermostats that regulate temperature in HVAC systems with air pressure differential and are usually used in commercial and industrial buildings. The T-4000-2144 cover does not control the thermostat itself, but it does cover it. The cover provides protection to internal parts of the thermostat from dust, dirt and minor impact hence extending life of thermostat. The color is Beige to match most interior decor in buildings and it is neater color.
