Here is the ventalation my husband bought. Think they are called "gable vents"? Not sure right now. Here is 2 angles to which they would be put.... Here is the inside of each side to which they would be installed..... Now I have to tell you I had a bad night one night when they all tried to go higher, and the roofing nails were an issue...oh my..what a night...one of the first in the coop. We covered the ledges with cardboard and that seemed to solve the problem.... The side opposite the roost... The side above the roost...(2 views) Will these vents work with the cardboard in place for proper ventalation this winter with out creating a draft? I am in NW Ohio. I am just so confused in this area...sorry to be such a confused chicken owner...a newbie, and want to do it right !! Hindsight is great Will the cardboard be enough of a deterant of the cold air???