Yeah dude, in-line fans come with mounting hardware, but you should put rubber grommets or some sort of shock absorber under them as they tend to get a little loud. If worse comes to worse, you can put a 4" flange on either side of the cab wall so you can connect the ducting from your cool tube to the inside wall, and the in-line fan to the outside one. Drawing air out of the cab and into your scrubber, which is in my experience quieter. Good luck buddy!
Thanks, acro, it is private.
orgaero, would an inline fan be available locally, or would I have to order off the internet. Carbon scrubber is my number one priority after I fix a little issue with one of the plants, I am going to try and build my own. I also need to light proof, but with the issues I am already having I am going to wait until after I get the carbon scrubber and better fans installed. On a good note, with cfls running now, and a humidifier in the closet, temps are around 75 and humidity is 40-50%.