Stone Age Manufacturing Rear Wall Mount Outside Air Kit - Essential for Your FireplaceStone Age Manufacturing Rear Wall Mount Outside Air Kit Are you worried about your fireplace not getting enough air for optimal combustion? Do building codes in your area require an outside air supply? The Stone Age Manufacturing Rear Wall Mount Outside Air Kit is here to solve those problems. Why You Need This Outside Air Kit This kit brings fresh air directly into your firebox, enhancing draft and combustion efficiency. Its designed for indoor