Each aeration system is designed individually, based on the system's size, grain depth, grain type and layout.
Full, round, perforated duct is laid on the floor of the system. The duct is connected to a centrifugal or vane axial fan located outside the system between the wall frames.
Plastic, perforated air duct is laid over the top of the grain pile on a rectangular system at specified intervals to supply overhead intake of air under the tarp.
Aeration fans are placed on a suction system, drawing intake air through the overhead plastic duct and through the sidewall and then exhausting it through the fans.