Pneumatic Thermostat, Direct Acting, 2 Pipe, Heating and Cooling, Dual Temperature, Control Air Pressure 15 to 30 psi, Air Connections 5/32 in Barb, Element Type Bi-Metal, Max. Air Pressure 30 psi, Max. Ambient Temp. 140 Degrees F, Mounting Style Vertical, Height 3 3/8 in, Width 2 1/8 in, Depth 1 5/8 in, Temp. Control Range 45 Degrees to 85 Degrees F, Air Consumption 20 scim, Throttling Range 3 to 15 psi, Includes Mounting Plate