Quote Originally Posted by grey1223
450CFM is more than enough. Get yourself a rheostat and slow your fan down until it's quiet enough. If you exhaust on a timer just exhaust a little longer at a lower speed. On full speed you'd exhaust in less than 2 minutes.

Also, the further the fan is from the outlet, the less noise you'll have.
Thank you for the tip !!! I was planning to get one. I may event get a muffler, never too sure !

I plan on an 6" exhaust so the air intake should be at least 6" but if I install a vent on the door do you think it's too much for the intake ?