Field Reversible: Engineered for easy reversible mounting to accommodate different damper rotation directions (CW/CCW)

allowing technicians to effectively conceal holes

the 63922 burner orifice provides the exact physical dimensions and sizing required for seamless integration with Reznor F-50 and F-75 models

This is an auto-reset limit switch

Johnson Controls T-4000-3139 Plastic Cover Field Reversible: Engineered for easyThe 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