Oh, nice! I must have missed that. So I dont need to split up my air flow at all, I can just run a single length of duct:

Code: 

   Outside
      /\
      |
      |
      |
      /\
  inline fan
      /\
      |
      |
      |
      /\
  reflector
      /\
      |
      |
      |
      /\
   filter