I am starting a bathtub refinishing business and needed a portable exhaust fan and system. The fumes from the paint are pretty bad and in a residential home I needed to move them out of the house fast. I needed a powerful unit and this 12' blower was perfect for the job. Also, I needed extension tubes to be able to move the fumes out of the house from long distances. It took a little research to find the best equipment and the best price. I was happy to find both quality and pricing with this company. To find the extension tube may find a little bit of work but the competition pricing was motivation to finally find it. For the most power and at the best price I recommend this unit for an exhaust system.