yeah I had the same probs and am slowly bringing the temps down. My temps now are about 90% not what I want but its going to have to do for now My temps were also at 109 with my closet door closed . Gave me lots of work to bring the temps down 18% with the door closed.
Few things I did to bring the heat down.
my space is 2x4x7.
1 250CFM booster exhaust fan on top (35bucks H.D.)
1 80CFM booster blowing fresh air at the bulb thru a cool tube(cool tube made from our FAQs)then throwing the hot air out of the cab box
1 80CFM booster blowing fresh air at the bottom
1 reg small fan blowing at the plants

and I will be adding a 100CFM cpu fan to blow more fresh to try to bring the temps down to my DREAM temps. Hopefully this helps

DAMN 5 FANS

Hope all is good and u resolve ur problem and yes you will be making more holes in ur cab box
BukDatAss Reviewed by BukDatAss on . temp control in my cab I have this cabinet that I bought and built and is in my closet. Dimensions are 19"deep 31"wide 53"high. Light is 250watt HPS. Temp inside without fans is around 110, yikes! I have a number of computer fans taking it down to about 90.5. I understand this is still too high, but there is not much more i can do cause i dont feel like taking shit apart and fuckin with it in mid grow. so i intend to take the proper steps in giving it proper temp next grow, which brings us to the question: I Rating: 5