whats the quietest 4 inch inline fan to buy .

i need a quiet 4 inch fan for my carbon filter,it has to be stealthy im growing in my loft.

How much air do you need to move?

I have 2 of these - they work pretty well and very quiet if sealed in a box with insulation inside: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=130463345544

Yeah I got the same question my box is 6 cubic feet and I need a quiet fan that can be hooked up to a filter my box is insulated too

My 4 inch fans run at about 50 db so equivalent to someone talking. I don't think you can get much quieter than that unless you build a box for it.

I have gotten use to the noise of pumps and fans and the like although when trying to sleep sometimes you cant help but hear an annoying hum.
I guess that's the price we pay for growing some quality herb.

i've heard of a fan called whisperline. its like 200 bucks. 120 CFM. 1 Sone of noise

here ya go. http://www.hvacquick.com/products/residential/AirFlow-Boosting/Inline-Air-Booster-Fans/SP-TD-Series-Inline-Fans


I use the TD-100X

crispitycrunchity said:

here ya go. http://www.hvacquick.com/products/residential/AirFlow-Boosting/Inline-Air-Booster-Fans/SP-TD-Series-Inline-Fans


I use the TD-100X

Click to expand...

I'm using the TD Silent It's pretty quiet