Hi there! I want to say that when I was building my office cabinet, I also wondered about the ventilation and to be honest have been looking for a long time for suitable ventilation system. I've tried two of them VNG ventilation and ITHO ventilation. In comparison both systems are very suitable to the different types of offices, but I personally using ITHO, and I'm very glad. Maybe someone can also share impressions of the same ventilation system?
