The DryAir 400 GTS GreenThaw™ System is a diesel-powered ground heater delivering 348,000 BTU/h. Equipped with 3,000 ft of 5/8″ hose, it thaws up to 6,000 ft² and cures concrete slabs up to 14,000 ft². Features include a flow reverser for uniform heat distribution, a combustion environment control system for reliable cold-weather starts, and an optional lift frame for easy transport.