Crawl Space Dehumidifier When indoor room humidity is too high, it will be very diffcult to discharge especially in the narrow building space, and it also will influence the comfortable level and air quality meanwhile be harmful for people health. Crawl Space Dehumidifier can dehumidify at the same time bring in fresh air to keep the indoor humidifer at a relative level. General Features: 1. Air Flow(m3/h): 500 2. ESP(pa): 80 3. Power: 220v/50hz/1P 4. Rated power(w): 820 5. Dehumidifer Capacity (L/D): 40 6. Fresh air volume(m3/h): 0~180 7. Uint Dimension(mm): 850*390*480 8. Refrigerant: R22 OR R410A 9. Working temperature range: 5~35C 10. Working humidity range: 35%~99%