Model complete, welcomed the consultation (Price does not include shipping costs with tax) GFX series factory air box is one of my series of air conditioning products, high-pressure polyurethane foam slab structure, with low noise YDW double inlet centrifugal fan and Chip early efficiency filter combination. In industrial production, civil, commercial *, cultural and educational systems for air-conditioning engineering supply and exhaust purposes. With small size, excellent insulation properties, light weight, low noise, simple operation and maintenance and so on. GFX wind chassis installation must be stable, must not bear the weight of the exterior of the duct. Air duct should not be too long, not too much elbow, duct must be sealed to prevent external insulation should be energy loss. After the power is turned on before turning the jog fan to see if correct. Found that the amount of wind should drop cleaned filter, in order to ensure the normal operation of the unit.