The Johnson Controls T-4000-2142 is a professional-grade horizontal pneumatic thermostat cover designed specifically for the T-4000 series

offering a reliable seal for long-term monitoring applications

this OEM replacement sequencer prevents massive electrical surges by staggering the activation of heat strips using internal resistive timing

Designed to fit a wide range of bubbler models

Schneider Electric (Barber Colman) 20-707 Guard Els PW 17895 The Johnson Controls T-4000-2142 isThe Schneider Electric (Barber Colman) 20 707 Guard is a heavy duty, 5 3 16 inch square cast metal guard designed to provide rugged physical protection for sensitive temperature control components. This industrial grade thermostat shield is specifically engineered to fit over 2x2 or 3x3 pneumatic or electric units, ensuring critical settings remain tamper proof in high traffic commercial or industrial environments. For technicians and facility