Akasa OTTO SF12, IP68 Waterproof PWM Fan, Patented Anti-vibration Structure Case Fan, Detachable Frame, 120mm Industrial Cooling fan for Chassis, Heatsinks & Heavy-Duty Applications, AK-FN110

[ Advanced Auto Industry Structure Design ] - 120mm Otto fan with patented spring-like anti-vibration structure. Coupled with fibre-glass reinforced polymer able to perform in most demanding surroundings. [ Airflow-optimised S-Flow Fan Blade ] - Advanced S-flow design provides a stronger and more centralised airflow making it perfect for cases and heavy duty applications. [ IP68 Water and Dust Proof ] - Superstrong materials and water resistance make Akasa Otto fan incredibly durable. IP68 rated rotor able to withstand dirt, dust, sand and water. [ More Efficient Rotor Technology ] - Three phase motor provides smoother shifts between the slots, this lowers unnecessary vibrations combined with unmatched energy efficiency. [ PWM Cooling & Quiet Operation ] - PWM function ensures efficient and silent cooling delivery during higher and lower loads. Includes rubber mounting pins lower vibrations and help to eliminate fan noise.