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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
The Johnson Controls T-4000-2138 is a professional-grade beige plastic thermostat cover designed specifically for T-4000 series pneumatic room thermostats
Resettable Design: Features a manual reset button that eliminates the need for part replacement after a standard trip event
PTFE seats
When troubleshooting an air conditioner not cooling
replacing a pitted or oxidized sensor with a fresh OEM rod ensures the system maintains proper HVAC flame monitoring and operational safety
White-Rodgers F29-0231 Plastic Guard The Johnson Controls T-4000-2138 isThe White Rodgers F29 0231 is a professional grade clear plastic thermostat guard designed to eliminate unauthorized adjustments and protect sensitive climate controls in high traffic environments like offices, churches, and rental properties. This model features a dual mounting configuration, including both a ring base and a solid wall mounting plate, providing maximum versatility for field installations. Built with high impact polycarbonate, this
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US$ 227.50