Built with high-grade materials for long-term industrial combustion system reliability

Once the 144°C temperature rating is reached

Heavy-duty contacts designed for high-frequency switching and industrial-grade durability

supporting heat pump reversing valves energized in either heating or cooling modes

Crandall Stats & Sensors AT-11-404-CSS Thermostat Cover Built with high-grade materials forThe Crandall Stats & Sensors AT 11 404 CSS is a direct AT 11 404 cross reference replacement designed for commercial and institutional HVAC environments. This thermostat blank cover provides a professional solution for concealing wall damage, redundant wiring, or decommissioned control points following a pneumatic to electronic conversion or system upgrade. For technicians performing retrofits, this TSTAT blank cover ensures a flush mount against the