Review on 🌀 ANVISION 2-Pack 40mm x 10mm DC 5V USB Brushless Cooling Fan with Dual Ball Bearing Design - YDM4010B05 by Tyler Kota

I use them for ventilation in a terrarium. They have really good airflow and are very small. They do NOT come with a power adapter. For the placement I used the charger. The cable is just over 12 inches long. The body is just over an inch in height and width and maybe half an inch thick. They are SUPER light. The corners come with pre-drilled holes for installation. The fans have no shroud whatsoever, meaning the blades are exposed. As long as they work quietly.