15-25 Ton Analog Economizer, Position: Vertical, Volts: 24, Hertz: 50/60, The Solid State Economizer System Provides an Economical Method of Providing Cooling Air by Incorporating Outdoor Air in the First Stage of Cooling In HVAC Systems, Mounting Dimensions: 45"H X 47"W, Overall Dimensions: 46"H X 48"W X 25"D, Weight: 96Lbs, Includes: Filters, Screens, and Rainhood Assembly, Made in USA, In Manufacturer Box.