I cut the hole in the side as a window then realized that was a dumb idea so I out the styrofoam piece back in and made one on top. It did kind of come in handy though with the temp swings because if it got a little too hot/ humid I could open it a little or I could shut it a little usually overnight when it's cooler and I need to keep the humidity in. What's hard is that temp and humidity are fine and will stay the same for hours then all of a sudden humidity is up to 80. I have one more live egg in there I may just take a chance and put it under my broody hen. The door is open all the way because humidity is too high