Hi there!

I'm almost done with building my darkroom and was doing some research on fans. My space is about 7ft wide and 30ft long. I plan on replacing one of the windows (there is a total of 4 that will be covered) with plywood with a fan installed in that. Could someone recommend a ventilation system I should be looking at? I have looked on B&H and Freestyle websites and they both have pretty much the same kits and very few review. Anything I should stay away from?

In advance huge thanks for any help!