Stumax Aircraft manufactures some of the finest and most efficient EDF systems available anywhere in the world today. Unlike most other EDF manufacturers, we are one of the few EDF manufacturers who carry out all of the design, analysis, testing and manufacturing in house. Sadly, some of our innovations seem to get copied by some of our competitors pushing lower priced, lower performing units. Our EDF systems are designed purely for electric power, with efficiency and light weight being the two main design parameters. We don't rehash 30+ year old ICDF systems or use parts from other manufacturers and call the system our own. Every EDF system we sell is hand made to precision tolerances, with full quality assurance methods applied throughout the design, manufacture, assembly and testing process. When you purchase a Stumax EDF system you know that you're purchasing the finest system available, unbeaten in efficiency, one which will provide you with performance and longevity.