Quote Originally Posted by PlainJane
I can only reach one (without moving the cabinet) I can feel light suction. Then I put a piece a paper over it and it pulled towards it. It didn't hold it there but the paper sort of slowly slid down. There is an insect screen there though which might sacrifice a bit of air flow but I didn't want any junk getting in there since it won't be so easy to dust back there on a frequent basis.
I think there's good air movement though, I couldn't believe that plastic sheeting got sucked upward like that.

The fans are on and it's actually gone up to 31ºc but oddly it doesn't feel hot in there. I wondered if it was hotter because it's empty.
Crap, didn't think heat would be as much of an issue. I can see now that making the cabinet was probably the easy part. haha
Now I could be wrong, but I believe your temps will go up when you have plants in there.
The plastic was sucked up because you don't have a big enough intake, it should be bigger than the exhaust. 2-2" holes do not equal 1 4" hole(math, lol)
What is the temp outside the cab?
Looks good otherwise, good job:thumbsup: