Solar product and solar application http://www.sonnetek.com Designed and engineered in the U.S.A by SONNETEK, this solar powered vacuum fan applies to roof top installation for high-efficiency airflow circulation, extracting unwanted air within an enclosed space, such as hot air during summer and moist in the winter, therefore altering the environment to provide an eco-friendly and comfort living style. It is 100% solar powered, no electricity, no wiring is required. This fan unit performs continuously and quietly from sun rise to sunset, 24/7, during all four seasons. Easy self installation with full step-by-step instructional manual included. For a hassle-free, worry-free and guaranteed workmanship installation, a local roofing contractor can complete such installation task within a matter of one hour. Typically residential applications of this solar powered vacuum fan include roof attic, gable-roof room, garage, trailer unit living, remote area cabins, portable storage sheds etc. Commercial applications include warehouse, multi-unit storage facility, temporary job site offices, performing stage and much more. http://feedproxy.google.com/~r/SonnetekChannel/~3/lPdB3oYmix0/fan-at20p30b.htm http://www.sonnetek.com/product-p/fan-at20p30b.htm SONNETEK solar modules are efficient, reliable and offer high performance. These polycrystalline or monocrystalline PV modules are CE certificated according to IEC 61215:1995 standard. With heavy-duty anodized aluminum frame and high performance solar cells, SONNETEK photovoltaic modules also offer 25 years limited warranty http://feedproxy.google.com/~r/SonnetekChannel/~3/laXzrL_jP_E/solpa003-012.htm http://www.sonnetek.com/product-p/solpa003-012.htm