I have a cool cab from sunlight sheds. it 72" tall x 36" wide x 18" deep. i just bought a 600w hid lighting system for it and when i installed it the temps went up to 120f with the door closed. I had a LED light setup and the temps stayed around 85f. I was thinking that if i got a window unit a/c and ran ducting from it into the cab it might help a little but i am not sure. I was also going to run the ducting into the duct that blow air through my lighting hood. Any suggestions would be greatly appreciated as I just paid a lot of money for the lighting system and cant use it unless i can get the temps down.