Designed to meet ASHRAE 62.1 fresh air requirements, York DOAS delivers up to 100% clean, dehumidified outside air in all weather and climate conditions, and offers precise control through modulating heating/cooling capacities. System is made of pre-painted G90 galvanized steel with foam panel double-wall construction and R13 insulation value. Based on direct drive plenum fan, system utilizes energy recovery module to pre-condition fresh air by using energy from exhaust air.