White Rodgers 1H/1C Universal Vertical Mechanical Thermostat

Horizontal, mercury-free, snap action mechanical thermostat. Compatible with single-stage heating, cooling, and heat pump systems, without aux. Can be used with conventional oil, electric, and gas systems, 2 or 3-wire zone valve and millivolt applications. Features enclosed snap action contacts for increased accuracy and reliability. Resistant to vibration. Operating range: 50° F to 90° F. Five year warranty. Includes heat/cool sub-base.