Crap, looks like a pic didn't upload right. On the left side of the shed I have a 3'x2' window for intake. I found that window coupled with the little vent I cut above the front door gives a nice flow to the air inside. Just the window was sucking so hard it was basically blowing across the room right at my kiln, which I wasn't cool with for when it gets cold out. The vent redirects it and works well.