Century System Power Pak, air-cooled, 1-1/2 HP, (2) 100 gph circulating pumps, 115-208/230v/60/1-ph, 24.7 amps, 1.75 gallon capacity glycol bath, constant pressure expansion valve, adjustable electronic temperature control with digital readout, stainless steel cabinet, 26-3/4"W x 20-1/4"D x 31"H, R134a, cULus, NSF