I purchased a Dayton Squirrel Cage fan on ebay. I bought the 465CFM I believe it is. Well it just showed up and I have no idea how to set it up. I haven't wired it yet so I don't know which way the air even moves (never used one before, always used inlines). I also don't know how I'm supposed to hook ducting up to it. Is there a 6" flange that I need or something? what the hell do I do with the square side? Any help would be appreciated if you've used one of these things!