Just screw the aerator into your grain, plug it into any outlet and it goes to work immediately. Rugged fan is powered with 115-volt, 60 cycle motor.
A 12" or 16" fan sucks out a large volume of hot, damp air, keeps grain fresh and cool. Economical drying and aerating of your grain in either flat or round storage. Instant action to remove hot spots. Aerates up to 5,000 bushes of grain at one time. Reaches deep - aerates grain up to 18 feet deep. Extra tubes may be purchased and fan heads may be moved around as needed.

No. 334 has a 12" diameter fan and 1/12 HP motor.
No. 131-5 has a 16" diameter fan and 1/6 HP motor.