Okay check out the picture, see the three rectangular areas in the octagon on top of the building? Those are areas my husband had designed some windows for heat ventilation. I cannot decipher his drawings and he is no longer on this earth to help me. I really need to get the hot air out of the top of this building. Any products come to mind that can be opened and shut from the ground? I have googled to no avail. There has to be something out there I can install there to solve this ventilation problem. Any ideas?