Johnson Controls T-4054-1 Thermostat

Energy Manager Heating-Cooling High Volume Output Thermostat, Direct Acting, 400 SCIM Flow Capacity, 38 SCIM Air Consumption, 13 to 25 Psig Supply Pressure, 55 to 85 Degree ( Two Dials ) Dial Range, Adjustable Deadband between 5 and 12 Psig