Implements the project of building a tunnel based on 3 fans fi200mm, wheel elektryczny.Preis construction of about 300 thousand. $. I have a design on paper and the company that will build it. Flight zone of about 2.6-3m open system. The inspiration is the picture that I found on the web. In my country does not have such a machine. I want to use these fans Do you have any experience in the topic?