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deep oxidation or cracks in the ceramic insulator require a full replacement to ensure the system operates within manufacturer specifications
requiring a replacement like the 100241
Fast Installation: Round can design with standard 6
reducing downtime and manual resets
flare connection
Johnson Controls T-4000-3139 Plastic Cover deep oxidation or cracks inThe 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