meeting the original factory specifications for system safety and operational reliability in commercial and residential hydronic applications

fryer applications typically require 450°F rated components

and 193 Series low water cut-offs and pump controllers

This specific part is engineered for horizontal mounting

Johnson Controls T-4000-3139 Plastic Cover meeting the original factory specificationsThe 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