Unknown Mid-Blower exhaust fan humming LOUDLY!

Details
Title | Unknown Mid-Blower exhaust fan humming LOUDLY! |
Author | Smarty FanMan 'N More |
Duration | 0:51 |
File Format | MP3 / MP4 |
Original URL | https://youtube.com/watch?v=K9F8jig3kRI |
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Description
Loud hum. Unknown Mid-blower exhaust fan at a coffee shop. This fan works actually good, but it's just humming really loudly.