Top-selling products in Germany! Popular DIY enthusiasts can enhance ventilation anywhere. Ideal for cooling fans in RVs. With the functional rack mounting kit, you can easily install it in any location near the device you want to cool, instantly boosting ventilation. Equipped with two exclusive, quiet yet powerful airflow fans and a speed controller that can switch between automatic and manual modes, it offers both whisper-quiet operation and perfect cooling performance. Monitor the low-noise operation and airflow performance through automatic or manual speed control. You won't need to design a DIY fan and speed controller to meet all your cooling needs. This is the perfect cooling solution for you. All components have been prepared, tested, and mostly assembled by us. The only things you need to consider are where you want to cool and how easy it is.