After a long period of outdoor dust and rain test, the air intake volume is reduced by up to 3%. It can effectively filter Dust and become clean after rain washing, no maintenance is required.The service life is more than 5 years. The item "Felt cover F7 Solar air heater Fan Ventilator Heating panel Dehumidifier Heat" is in sale since Wednesday, December 30, 2020. This item is in the category "Home & Garden\Home Improvement\Electrical Supplies\Alternative Energy Supplies\Solar Power Supplies\Solar Panels & Kits". The seller is "nakoair-solarairheater" and is located in Minneapolis, Minnesota. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.