WDERAIR 4 x 120mm Server Rack Mount Fan 12V with 100V - 240V AC Power Variable Speed Control, High Airflow for DIY Cooling Mining Rig, AV Cabinets, Home Theater, Refrigerator, Greenhouse - 12025B12Vx4-control

• 【Application】DIY cooling fan good for GPU mining rig, router, rack receivers, cabinet, av equipment modem, chassis, amplifiers, server workstation, computer pc case, greenhouse, mushroom growing or as exhaust fan for freeze dryer , vent martha tent , terrarium ventilation,gaming consoles/devices. 【Cooling Solution 】Have a wide arrange of applications and options there. You can use the fans two by two together or four side by side. As a replacement window fan can be placed one forward and one reverse to complete the push and pull of air. 【Variable speed with ac plug】 AC to DC 12V Speed controller | Input : AC 100V - 240V 50/60HZ | Output: 3v - 12v 2A | Nice variable speed controller. Performs well, easy installation. 【Warranty】One-year quality assurance. Please contact us If the product has any quality problems, it will be replaced within one year. 【Size】240 x 120 x 25 mm (9.44 x 4.72 x 1 in. ) x 2| Speed: 900 to 3000 RPM x4 | Airflow: 45 to 92 CFM x4 | Noise: 22 to 37 dBA x4 |Rated Current: 0.45A x4 | Bearings: Dual Ball