GRAIN HANDLING / GRAIN AIR CLEANERS GRAIN AIR CLEANERS FOR A LONGER SHELF LIFE. CASA’s Grain Air Cleaners, otherwise know as pre-cleaners, are reliable equipment designed to separate the grain from impurities. Cleaned grain dries faster and has a longer shelf life which has direct impact on the grain quality. Offered in two models and two capacities, our Air Cleaners operate by pulling a large amount of air through the grain to remove light, unwanted impurities. Brochure Download our brochure to learn more about our available ranges and options. Download FEATURES KEY FEAUTURES PUMP (CFM) 1,800 & 3,000 PIPE 8″ & 12″ MORE DETAILS TO COME Do not hesitate to contact us via the contact details at the bottom of the page for additional information, it will be our pleasure to guide and inform you!