Cherry-Burrell 4 barrel swept surface heat exchanger, (4) 6" x 72" barrels each with 9 square feet of surface area, chrome plated barrel contact, mutator shafts with clip on stainless steel blades, 2" I-Line fittings, each unit with a Baldor 20hp 230/460/3/60 1770 rpm motors with Nord gearboxes, stainless steel frame, no name plates, very good condition.