Can I use a 6" Inline fan with 4" ducting?

**winters1** · 01-27-2008, 11:22 PM

I already have existing 4" duct I would like to use with a new 350cfm 6" Inline fan I've bought.

**stickyicky77** · 01-28-2008, 12:26 AM

You will need a 4"-6" adapter from HD in the air conditioning section.

**tdent420** · 01-28-2008, 12:43 AM

addaaaapptor.

hit up the hydroshop

**winters1** · 01-28-2008, 05:06 AM

i wonderi if it will cause ill effects on the light fixture since it's a 4" vent hole. i know it will probably increase velocity and noise but it would just be easier to use what's already there.

**email468** · 01-28-2008, 08:14 AM

won't cause any ill effects on your light - if anything the fan would be the thing taking the efficiency hit - but even that would be negligible. i find that very tough - aluminized duct tape (the sticky kind - not the metal kind) makes excellent adapters if you don't want to buy any.