Case fan 140mm silent wings 4/bl097 be quiet

SILENT WINGS 4
140mm PWM high-speed
NO COMPROMISE SILENCE AND PERFORMANCE
Silent Wings 4 140mm PWM high-speed 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 radiators and heat sinks
Small tip clearance and a fan frame with funnel-shaped air outlets for extremely high air pressure
Very silent operation even at maximum 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