Pneumatic Thermostat Direct Acting 2 Pipe Heating and Cooling Single Temperature Control Air Pressure 3 to 15 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 Wallplate and Screws