Johnson Controls T-4000-3141 Plastic Cover often found in standard Lennox

often found in standard Lennox furnaces

and normally closed terminals

warping from over-torquing

Extreme Thermal Range: Industrial construction allows for stable operation in ambient temperatures ranging from -13°F up to 185°F

These gaskets are fabricated from heavy-duty

Johnson Controls T-4000-3141 Plastic Cover often found in standard LennoxThe Johnson Controls T 4000 3141 is a commercial grade pneumatic thermostat cover designed for horizontal mounting configurations within HVAC control systems. Engineered for T 4000 series thermostats, this white plastic enclosure features a single setpoint window to allow for clear visibility of calibration without compromising the protection of the internal bimetal sensing elements. The unit is designed with a clean, low profile aesthetic featuring