Dual 120mm fans designed for Cooling Cabinet, Chassis, Server and Workstation Powered by wall outlet; The speed controller designed to set the fans' speed to optimal noise and airflow levels. 4V - 12V Power Control | Input: 100V - 240V 50/60Hz | Output: DC 4-12V 200-2000ma Total Airflow: 186CFM(2x 93CFM) | Total Noise: 38dBA | Current: 0.5Amp | Dual Ball Bearings, Working up t 50000 hrs at 25 degrees. Dimensions: 4.72in(L) x 4.72in(W) x 1in(H) in per fan. Totally Size: 9.45in(L) x 4.72in(W) x 1in(H) Product Description Dual 120mm Fans Designed for projects that requires cooling or ventilation; with a variable speed controller you can set the fan?s speed to optimal noise and airflow levels for various environments; the fan can be powered through any standard AC outlet. Key Features Two Way Installation Fans can be set to be either an intake or exhaust, simply mount the fan to the bracket pointing in the desired direction before installing (if you are looking at the label the air will flow towards you) Speed Control Power control adapter is a standard 2 prong wall socket, since it is 100-240V AC powered it can be used in any region if you use adapt to the appropriate plug. Dual Ball Bearing Tolerate higher temperatures, high precision dual-ball bearings have a lifespan of 50,000 hours; allows the fans to be laid flat or stand upright. Sided Fan Guards Effectively protect fingers hurt and at the same time protects the fan blades from damage, safe and beautiful. Applications Widely used for projects that requires cooling or ventilation; such as network cabinets, servers, bitcoin mining machines, workstations, game hosts, chassis, weak current boxes, refrigerators and more. or even help keep smaller enclosures and racks holding computers, receivers, amplifiers, and other AV equipment from overheating. Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 529 4.4 out of 5 stars 640 4.4 out of 5 stars 640 4.4 out of 5 stars 640 Price $18.99$18.99 $29.99$29.99 $39.99$39.99 $56.99$56.99 Dimensions 120x120x25 mm 240X120x25 mm 360X120x25 mm 480X120x25 mm Voltage 12V DC 12V DC 12V DC 12V DC Speed 3000 RPM 2500 RPM 2500 RPM 2500 RPM Airflow 114 CFM 2x 83 CFM 3x 83 CFM 4x 83.2 CFM Dual Ball Bearings at up to 50,000 Hrs at 25? ? ? ? ? Speed Control ? ? ? ? Applications (can be mounted in any axial orientation) DVRs, CCTV security camera, lighting, receivers, amplifiers and other audio video electronics network cabinets, servers, bitcoin mining machines, workstations, game hosts, chassis, weak current boxes, refrigerators and more. network cabinets, servers, bitcoin mining machines, workstations, game hosts, chassis, weak current boxes, refrigerators and more. gpu mining rig, server cabinets, radiators, workstations, AV closets, computers, receivers, amplifiers, modems, routers, DVRs and other AV equipment