www.ostberg.comstberg has its roots deep in Swedish engineering, where innovationand entrepreneurship have flourished for centuries. Swedishindustry continues to be characterized by top-notch technicalexpertise. ~The visionary In the early 1970s, radial fans were expensive, noisy, and took up a lot of room. Hans stberg envisioned a fan that was effective, easy to install, and required a minimum amount of space. He pursued this vision and the result was the circular duct fan â an innovation that has now become a worldwide standard. A new generation of fans Just a few years later came the next revolutionary discovery â the rectangular duct fan. This fan had an even lower installation height and a higher capacity. Over the years that followed, Hans stberg continued to develop new generations of duct fans with higher capacities, lower noise levels, better quality and lower prices. A multi-million dollar business stberg fan production started in 1981 and in less than fifteen years, the business grew from a small workshop to a multi-million dollar company. At stberg, we work to continually develop our products. Our innovative power is the driving force in our company and we work to consistently maintain the very best quality on the market.