The noise (dB) will vary with factors such as the speed of the fan (rpm), size of the fan (mm), and rated air flow (CFM). The power draw will also vary.
I don't know what size was used in Star Trek, but 120mm tends to be commonly used.
116 choices in stock at Digikey at the moment:
https://www.digikey.com/products/en...=1&stock=1&quantity=0&ptm=0&fid=0&pageSize=25
Note that CFM can vary anywhere from 21 to 164, and dB from 20 to 60.
My favorite 120mm cabinet cooling fan that provides a balance between air flow and noise is this one:
https://www.digikey.com/product-detail/en/SP103A-1123LBT.GN/259-1389-ND/1021238
In applications where I need less air flow and a smaller fan, I'll use something like this 92mm unit:
https://www.digikey.com/product-detail/en/sunon-fans/SF11592A-1092HSL.GN/259-1382-ND/1021231