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๐จ Silence Meets Power: Cool Your Rig Without the Noise!
The be quiet! Silent Wings Pro 4 140mm PWM fan combines high airflow (97.4 CFM) with ultra-quiet operation (36.8 dB) and a max speed of 2400 RPM. Engineered with optimized blades, a funnel air outlet, and a 6-pole hydraulic bearing motor, it delivers powerful, vibration-free cooling. Perfect for professionals seeking silent yet efficient PC cooling backed by a 5-year warranty.



| ASIN | B0B74CP6X2 |
| Air Flow Capacity | 97.4 Cubic Feet Per Minute |
| Amazon Bestseller | #25,680 in Computers ( See Top 100 in Computers ) #209 in Computer Case Fans |
| Brand Name | be quiet! |
| Compatible Devices | Laptop |
| Cooling Method | Fan |
| Country Of Origin | China |
| Customer Reviews | 4.7 4.7 out of 5 stars (473) |
| Global Trade Identification Number | 04260052188910 |
| Included Components | Fan corner for radiator, rubber and hard plastic mount, push pins, fan screws, manual |
| Item Dimensions L x W x H | 14L x 2.5W x 14H cm |
| Item Type Name | Case Fan |
| Item Weight | 310 Grams |
| Manufacturer | be quiet! |
| Material Type | Plastic Rubber |
| Maximum Rotational Speed | 2400 RPM |
| Model | BL099 |
| Noise Level | 36.8 Decibels |
| Number of Items | 1 |
| Part Number | BL099 |
| Power Connector Type | 4-Pin |
| Unit Count | 1 Count |
| Voltage | 12 Volts |
| Warranty Description | 3 Year Manufacturer Warranty |
| Wattage | 3.04 W |
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