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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 cutting-edge blade design and a 6-pole motor to deliver up to 97.4 CFM airflow at a whisper-quiet 36.8 dB noise level. With a max speed of 2400 RPM and a funnel-shaped air outlet for high static pressure, itโs engineered for premium cooling performance on radiators and heat sinks. Ideal for professionals and enthusiasts seeking powerful, silent cooling with dynamic speed control and long-lasting reliability.







| ASIN | B0B74CP6X2 |
| Air Flow Capacity | 97.4 Cubic Feet Per Minute |
| Best Sellers Rank | #19 in Computer Case Fans |
| Brand | be quiet! |
| Brand Name | be quiet! |
| Compatible Devices | Radiator |
| Cooling Method | Fan |
| Customer Reviews | 4.7 out of 5 stars 2,590 Reviews |
| Global Trade Identification Number | 04260052188910 |
| Item Dimensions L x W x H | 5.51"L x 0.98"W x 5.51"H |
| Item Weight | 310 Grams |
| Manufacturer | be quiet! |
| Material Type | Copper |
| Maximum Rotational Speed | 2400 RPM |
| Model | BL099 |
| Noise Level | 36.8 Decibels |
| Number of Items | 1 |
| Part Number | BL099 |
| Power Connector Type | 4-Pin |
| Product Dimensions | 5.51"L x 0.98"W x 5.51"H |
| Set Name | PWM Pro Version |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Warranty Description | 1 year |
| Wattage | 3.04 watts |
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