Hi All! I have approx. a 12' X 12' old shed that was converted into our coop. The peak is about 10'. It has one 4' X 2' window ( 4' long ), and one 3' tall X 2' wide window along with a 1' sq. pop door. I would really like to build a 16" sq. or so cupola for the top but, can't find any plans for this size. Does anyone know of any? It gets so hot inside in the summer time that I need more ventilation and a cupola would look great. I have a box fan in the smaller window blowing out but, that doesn't get the excessive heat out. Any and all help will be appreciated. Thanks!