I RUN A 4" AND AM VERY HAPPY WITH IT. MY FLOWER ROOM IS 5' x 4' x 6'.

I JUST BOUGHT A 12' VORTEX,,, OMG!!!! IF IT HAD WINGS, IT WOULD FRIGGING TAKE OFF. I HAD TO INSTALL A REO-STAT SO I COULD CONTROL THE AIR MOVEMENT. MUCH BETTER NOW.

BUT TO ANSWER THE QUESTION, THE 6" SHOULD BE FINE. INSTALL A REO-STAT IN NEED BE, TO SLOW IT DOWN.

GOOD LUCK
BOYZNUS Reviewed by BOYZNUS on . Vortex fan question Does anybody have experience with the 6" vortex exhaust fan. I am trying to decide whether or not i should get this fan for my grow cabinet. I've heard that this fan is very quiet and reliable, but would this fan move too much air for my room size? My grow room dimensions are 2.5 feet deep, 4 feet wide, and 6.5 feet tall. The fan runs at a rate of 449 CFM. Any comments on this fan are welcome. Rating: 5