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💨 Silence Meets Power: Cool Your Rig Without the Noise
The be quiet! Silent Wings Pro 4 140mm PWM fan features newly optimized fan blades for exceptional air pressure and airflow (165.5 CFM), a 6-pole motor with fluid-dynamic bearing for ultra-quiet operation at just 36.8 dB, and a convenient speed switch offering three maximum RPM settings up to 2400. Designed for cases, radiators, and heatsinks, it includes multiple mounting options to reduce vibration and noise, making it the go-to choice for high-performance, whisper-quiet PC cooling.


















| ASIN | B0B74CP6X2 |
| Air Flow Capacity | 165.5 Cubic Feet Per Minute |
| Best Sellers Rank | 25,032 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 1,841 in Components & Replacement Parts |
| Brand | be quiet! |
| Compatible Devices | Radiator |
| Cooling Method | Air |
| Country Of Origin | China |
| Customer Reviews | 4.7 4.7 out of 5 stars (848) |
| Global Trade Identification Number | 04260052188910 |
| Included Components | Case Fan, Manual |
| Item Dimensions L x W x H | 14L x 14W x 2.5H centimetres |
| Item Weight | 310 Grams |
| Manufacturer | be quiet! |
| Manufacturer Part Number | BL099 |
| Material | Polycarbonate |
| Max Rotational Speed | 2400 RPM |
| Model Number | BL099 |
| Noise Level | 36.8 Decibels |
| Number of Items | 32 |
| Power Connector Type | 4-Pin |
| Product Warranty | China |
| Set Name | PWM Pro-Version |
| Unit Count | 1.0 count |
| Voltage | 12 Volts |
| Wattage | 3.04 watts |
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