be quiet! Silent Wings 4 140mm PWM BL096

Silent Wings 4 140mm PWM combines all features of a virtually inaudible with an extremely performant fan for the most demanding applications.. Optimized fan blades for the highest performance on heat sinks. Small tip clearance and a fan frame with funnel-shaped air outlets for extremely high air pressure. Virtually inaudible operation at regular speed. 6-pole fan motor and fluid-dynamic bearing for less vibration and very smooth operations. Anti-vibration mounting with push pins and screwed installation option. Super-long lifespan of up to 300,000h. Elegant look with high-grade fan sticker in an all-black design.