The Can-Fan� High Output series are centrifugal fans utilizing our proven German design, Swiss components and precision manufacturing. The High Output Can-Fan� uses a high-performance motor for use in more demanding applications. They have carried AMCA certified numbers longer than most other fans have been around and you can be sure you�re getting every CFM we claim to deliver. Can-Fan� can be easily installed in minutes using the included mounting bracket. They have a powder-coat finish and are 100% speed controllable. Rated for continuous operation, they utilize an extremely reliable external rotor motor and reverse curve blade.