We have a single fireplace that we are making double sided. We were informed that we can do this but only if 1 side is closed. It is a wood burning fireplace with a gas starter. It has a new flu and was just re-done. So, my question is since we can only use 1 side, how should we "close" up the other side. We more than likely won't use the 1 side anyway. Can we get a glass fireplace screen and just leave it closed on the 1 side? Any help is appreciated! Thanks!