1.Using outer wall -mount installation 2.Low noise 3.Adapt to temperature Automatically The ALH-BX3 seires products keep the purity, sanitation, safety, and freshness indoor air, like the forest air, let the city peole feel thatthey are in the nature, far away from the pollution and disease. The life becomes more comfort-able and healthy. The work becomes more effcient. ModelPowerAir flow (m3/h) ...