Sometimes, an ordinary box fan isn’t enough to efficiently test wind turbines. The airflow created by a fan isn’t always consistent. The Air Stream helps alleviate that problem. An add-on created to attach to a 20-inch box fan, the Air Stream converts an ordinary box fan into a large laminar airflow source for use with wind turbines and other large structures. With cardboard and cool-melt glue, students can easily create a 20-inch grid that attaches to the average box fan. The Air Stream is great to use with the Wind Turbine Experimenter’s Kit, WinDynamo III, and more.