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3 exhaust fans, 2 tents out of the same vent?

Discussion in 'Grow Room Design/Setup' started by Deleted member 1127179, Jan 8, 2021.

  1. #1 Deleted member 1127179, Jan 8, 2021
    I'm installing another exhaust fan in my 4x8. The first one and the second tent are running out the same vent. Can I run the third one out the same vent? Will it push air back into the 2nd tent?
    Thanks
     
  2. #2 Vee, Apr 3, 2021
    knock ya self out ...ensure the inlets are passive tho

    good luck
     
  3. #3 Mad scientist, Apr 5, 2021
    If they are all the same cfm and all running continually then you shouldn't get blowback.
    The pipe that they all join into should be upsized though to handle the combined cfm's.
    If there is an issue you could get some inline one-way flappers to put on each individual exhaust line.
     

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