CG420za Posted September 3, 2015 Share Posted September 3, 2015 Morning guys, I have a question relating to extraction fans for my grow cabinet. I've attached a pic of the cabinet I intend to use. The dimensions are as follows : Height is 78cm Length is 86cm Width is 57cm I've found this fan on bid or buy that I wanna use for extraction, is it strong enough? Or do I need more than 1? I'll be using 3 45w cfl's for now. Fan spec : AXIAL DC FAN 120x120x38mm 12V DC BALL BEARING 3100RPM 138CFM - 0.36" H2O 48dBA http://www.bidorbuy.co.za/item/198374744/COOLING_FAN_12V_DC_120x120x38mm.html Any help would be appreciated! CK Quote Link to comment Share on other sites More sharing options...
Green Leaf Organics Posted September 3, 2015 Share Posted September 3, 2015 Hi bud For cfl that should be fine . I would also look at getting something that's 220v as it just makes wiring easier, no messing around with 12v adaptors Cheers Reaf Quote Link to comment Share on other sites More sharing options...
CG420za Posted September 3, 2015 Author Share Posted September 3, 2015 Shot Reaf! Would this be a better option? The CFM rating is lower though. http://www.bidorbuy.co.za/item/195995298/COOLING_FAN_220V_AC_120x120x38mm_WITH_BALL_BEARINGS.html Quote Link to comment Share on other sites More sharing options...
Toby Posted September 3, 2015 Share Posted September 3, 2015 I agree with GLO. I use 2 of those 220v 12cm ones. Just connect a plug and you good to go. Quote Link to comment Share on other sites More sharing options...
Green Leaf Organics Posted September 3, 2015 Share Posted September 3, 2015 Hi bud Well if ypu do the math your space works out to 13.502 cubic feet and if the fan does 87 cubic feet per m , let's rather call it 60 cubic feet per min as this will make up any margine of error , 60 divided by 13.5 gives us 4.444 . What this means is that your fan will extract the box 4 times a min or 280 times an hour which is more than enough. Cheers Reaf Quote Link to comment Share on other sites More sharing options...
CG420za Posted September 3, 2015 Author Share Posted September 3, 2015 And this is why I love this forum! Thanks so much for the input! Quote Link to comment Share on other sites More sharing options...
Green Leaf Organics Posted September 3, 2015 Share Posted September 3, 2015 No problem Bud , glad I could help Quote Link to comment Share on other sites More sharing options...
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