American Coolair's Type NBF fan provides the solution to fresh air ventilation in most types of greenhouses. The type NBF fans are built to give you years of heavy-duty trouble-free service. The rugged, belt driven construction operates in any position, has permanently lubricated ball bearings, and is available with single or two speed totally enclosed motors. Cool air has developed a complete ventilation system for greenhouse use combining the Type NBF fan with all aluminum shutter and heavy gauge galvanized steel wall housing (square box or slope) for exterior mounting, allowing a maximum of unobstructed interior space. The Type NBF fans are ECONOMICAL, PRACTICAL, AND EFFECTIVE.

The Fans are fabricated from heavy gauge steel with all welded construction offering the rigidity and strength for years for quiet trouble-free operation. A wide flared orifice is recessed and welded into the frame.