Ok but what about the other box i have? How do i scrub the air from both boxes then vent it out roof? Do i connect ducting to 1st box run it through second box... then to cool tube ...then to scrubber.... wish there was a way to run ducting from 1st box to 2nd box to cooltube to scrubber then through roof to vent outside, Is there? Or is that a wrong way to set this up? Am i missing something here ....am i gonna have to run seperate ducting to an additional inline fan to vent out roof?????