WHICH fan for SIS DIY Pro-Style Carbon Scrubber?

[macster]

Not that bad sort of like your furnace fan is running all the time which if anyone ask that's what I'm going to say it is,
Mac

 

[Jnugg]

Louder than a Inline rated at 49-55 Dba...I'd say a blower is around 70 db but I am not sure.

Remember now,each time you reduce the volume by 3 dba (decibels) it is like cutting the listners hearing in half.Try it with your home stereo or car stereo.Crank the volume loud.Now reduce the volume by 3 decibels....see what I mean?!