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.