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