2007, THAWZALL 6A CONCRETE EQUIPMENT, 1,577 hours, serial no: 02076AAEC481, 20,000 US Dollars.2007 THAWZALL 6A Ground Defrosting Unit, Enclosed Trailer, Kubota GL7000 Generator, Hour Meter Reads: 1,577. Thawzall Model 6A, 3,000 Feet of Hose, 5 Circulation Zones, 2 High Output Pumps, Boiler Unit, VIN: 1T9BT15107G576481.