The list below will help you find the best box fan for your needs. Shop this article: Lasko Air Circulating 20-Inch Box Fan, Black + Decker 9-Inch Tabletop Quiet Box Fan and Air King 20-Inch 3 ...

The original building instructions are based on 20 inch box fans. There are not many 50 cm / 20 inch box fans on the market in Germany. I found the following one offered by Sichler Hausgeräte: Germany ...