So, DH is making me a new Brooder Box for outside. I can't get the 2 x 5 growout pwn to hold temperatures, so great in summer but not winter as a brooder. So he is making all wood sides 2W x 3L x 2H, 1/4" wire floor, 1/2" wire top that slips on/off, but with split wood top that the lights will have holes cut out to fit over the wire on box. Or he can put them inside? So that during the day when its nice I can prop open one of the tops for more air and natural light. He'll build them a screen room later. My question with the tops down, Light(s) on the wire floor is the only air way. Is this OK? Is it enough air? Or should he put vents in the little front doors? I have looked at the Brooder thread in the Chicken section (over a hundred pages). Not many outdoor winter brooders. Most show wire on doors and lots of other wire that are obviously kept in a building of some kind. A few don't show other venting but no one edited back to let people know how their brooder worked out. My 2 x 5 is pretty open that I tried to close up, but we have made it more open during the summer and I just can't keep the heat up over 70 now. Those babies are starting to stink in here, I am ready for them to be outside.