Schneider Electric (Barber Colman) 20-850 Plate

The Schneider Electric (Barber Colman) 20-850 serves as a robust thermostat mounting plate designed for professional-grade HVAC control installations. Engineered for versatility, this black mounting adapter allows for the seamless integration of 2x2" devices onto standard 2x4" vertical or horizontal outlet boxes. As a direct crossover, the 20-850 is identical to 10-82, ensuring field compatibility for legacy system maintenance and modern upgrades alike.

This heavy-duty plate is purpose-built for the T12 through T33 series (including 2211 through 2218 series) and is compatible with specific Barber Colman pneumatic thermostats like the T34-3011 and T35-301. By utilizing the included dual wing bolt screws, contractors can achieve a secure, level fit even in challenging retrofit scenarios. Its neutral black finish provides a professional aesthetic that blends into mechanical rooms or commercial interiors, while the reinforced mounting points prevent flexing during calibration or daily operation. For technicians managing large facilities, keeping this HVAC mounting hardware on hand ensures you can bridge the gap between varying electrical box configurations and specialized pneumatic control heads without field modifications.

• Universal Orientation: Fits both vertical and horizontal 2x4" outlet boxes for maximum field flexibility.
• Direct Legacy Crossover: Functions as a drop-in replacement for the Barber Colman 10-82 plate.
• Enhanced Compatibility: Specifically designed for T12, T33, T34, T35, and T36 series thermostat assemblies.
• Complete Installation Kit: Ships with the necessary wing bolt hardware to reduce downtime on the job site.
• Professional Grade Material: Durable black construction protects against the wear and tear of commercial HVAC environments.

Is the 20-850 compatible with non-Barber Colman devices?
While optimized for Schneider Electric and legacy Barber Colman T-series devices, the standard 2x2" to 2x4" spacing can occasionally accommodate other low-voltage controllers. Always verify specific center-to-center hole measurements before installation.

What is the difference between the 20-850 and the older 10-82?
There is no functional or dimensional difference; the 20-850 is the current part number for the identical 10-82 mounting plate.

Can this plate be used for horizontal mounting?
Yes, the plate features a hole pattern that supports mounting to a 2x4" box in either a vertical or horizontal orientation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.