The SA-I is fitted to a single block or a single holdover plate. Air cooling is ducted to allow installation in a confined space. Specifications: 110 volts A.C. Amp draw (run): 1.5 to 2 per hour. Approximately 1/8 hp. Weight: 24 lbs. Dimensions: 12.5 inches high, 14.5 inches wide, 7.5 inches deep. Sound level: Silent.