Electric Wall Ceiling Heater Thermostat 208/240/277V AC 2 1/2 in Overall Depth 2 1/2 in Overall Height 1 3/8 in Overall Width Compatible System Type CDF Series Heaters Number of Poles 1 208/240/277V AC Thermostat Control Voltage 22 A Contact Rating 22A @ 120 to 277V AC Housing Color Black Mounting Hardware Mounting Type Unit Mount Programming Capability Not Programmable Mechanical Selector Dial UL Listed CUL Listed Maximum Operating Temperature 90 Degrees F