Johnson Controls T-4000-2141 Plastic Cover 1/8" or 3/16") may be

1/8" or 3/16") may be required

This is a spark electrode designed for high-voltage ignition systems

the internal hygroscopic discs regulate air discharge based on moisture levels

Simplified Service: Direct replacement for York

technicians recognize this as a critical component for maintaining system SEER ratings and preventing premature blower motor failure caused by high restriction

Johnson Controls T-4000-2141 Plastic Cover 1/8" or 3/16") may beThe Johnson Controls T 4000 2141 is a commercial grade beige plastic thermostat cover designed specifically for horizontally mounted pneumatic thermostats. This impact resistant housing provides a professional finish for pneumatic control systems while protecting internal components from dust and debris. Engineered for the T 4000 series, the cover features a clean aesthetic with the Johnson Controls logo and a single set point window for clear