Line VoltageThermostat, Mechanical Non Programmable, Switch Type SPST, Switch Action Close On Rise, Number of Switches 1, Control Range 50 to 90 F, Height 5 In, Width 3 1/4 In, Depth 2 3/4 In, Temp. Sensitivity +/- 3 Deg F, Sensor Type Bi Metal, No Positive Off Position, For Use With Cool Only, Color White, Mounts to standard 2X4 In Electrical Box, Analog Display, Enclosure Type Plastic Line Voltage ThermostatsMount to standard 2" x 4" vertical box. UL Listed, except 4NE56. Additional agency standards as noted.