Richard JH. RJH-165L Industrial Dehumidifier Price in Bangladesh. Richard JH. RJH-165L industrial dehumidifier comes with a 165-liter water tank and an indicator to show the water level. It features auto defrosting that helps to work at a low temperature. This dehumidifier's cover range is 2150-2420 sqft. Additionally, it has four wheels that help it to move any place.