Light venting fan size

[skamm14]

looking for help.i 4 1000's in a row with 8 total.how should i vent?they are in a 21 foot run with outside air as an inlet? will exhaust out of room.what size fan or fans should the exahuast be, is 2 tens better than 1 12 tied together?

[headshake]

are your lights air cooled? the more exhaust the better. best case scenario, you want to be able to exchange the air in your room once every 1-2 minutes, but once ever 5 will suffice.

to figure out your cubic footage multiply length x width x height. the fans you are looking at are rated in CFMs or Cubic Feet per Minute. you do the math.

the two tens will be better than one 12.


-shake

[skamm14]

currently im using two sixes but cant get my room below 82 i have air conditioning as well the lights are not ever touching my room as i have a fresh air inlet to each row as well as one 6 inch exhaust fan out each room .i am only using a 8 inch exhaust for the whole room .

[GaGrown]

I would go with the one 12 inch inline for the lights only and you will see a temp decrease as well. It won't be enough as far as exhaust.. Go with an 8 inch passive intake, and reduce the otherside of the 10 inch inline from 10 to 8 inch. So you will be running 10 feet of ten inch ducting then reducing and finish your run with the 8 inch. All the ducting should be on the exit side of your inline,with the exception of the peices you use to connect your string of lights.:thumbsup:

I am guessing your in a 10x10 or an 8x8?

Ga..