We have access to a Jotul Fireplace Stove #3 that used to be installed in my brother's fireplace. We are considering installing it in or in front of our masonry fireplace built in 1988. The manuel shows a clearance to combustibles with 16 inches from the edge of the stove to the trim. The diagram also titles the picture with a fireplace heat shield and another similar diagram lable in front of the fireplace. Does anyone know what the fireplace heat shield is. The diagram with that title doesn't show a heat shield that I can see. We are trying to figure out what we need to get and do to install it properly.