dandragonrage
[H]F Junkie
- Joined
- Jun 5, 2004
- Messages
- 8,295
So my Liebert UPS is way too loud. The stock fans are NMB 3110KL-04-B50s, 38CFM, 34dBa. I put in a top motor fan that's a little quieter for now but a lot less efficient. What fan in the 30-40CFM range is the quietest? Variable RPM entries are welcome.