be quiet! SILENT WINGS PRO 4 140mm PWM

be quiet! SILENT WINGS PRO 4 140mm PWM

Legendary quiet, unparalleled performance and features.

Highlights:

• Silent Wings Pro 4 140mm PWM is the most advanced, powerful and versatile fan from be quiet! 
• Optimized fan blades for maximum performance on radiators and heat sinks
• Speed Switch allows you to change the maximum PWM speed between medium-speed, high-speed and ultra-high-speed (up to 2400 rpm)
• Small distance between frame and fan blades as well as funnel-shaped air outlets for maximum air pressure
• Nearly inaudible operation at normal speeds
• 6-pole fan motor and Fluid Dynamic bearings for low-vibration and quiet operation
• Custom mounting options for use on radiators and heat sinks or as a case fan
• Elegant appearance with high-gloss fan sticker in classy black and high-quality sleeved PWM cable

Technical data:

• Dimensions (L x W x H): 140 x 140 x 25 mm
• Bearing technology: FDB
• Connector: 4-pin PWM
• Motor technology: 6-pole fan motor
• Weight incl. connection cable: 258 g
• Push pin mounting
• Screw mounting
• Air Flow @ 100% PWM / 12V (CFM / m3/h): 97,41 / 165,5
• Air Pressure @ 100% PWM / 12V (mm H2O): 3,64
• Loudness @ 100% PWM / 12V (dB(A)): 36,8
• Life expectancy @ 25 °C (hours): 300,000