At this point a three dimensional representation of the drawing will be created. Some artists describe this process, which is the most time consuming part of the creation of modern fireplaces, as "finding" the sculpture inside the stone block. The drawings are transferred to the stone to the exact measurements, with specific adjustments made according to needs. Then the images are shaped, and all the details are eventually carved out of the stone with specialized chisels, hammers and other tools. Then the pieces are shipped and delivered to wherever the fireplace is to be installed.
Many furnaces are also equipped with glass doors that are especially necessary when the fireplace is warming up and can not deal with smoke and thus lets the bitter smell in the room. The glass cover helps to prevent it. The doors can be swinging or lifting. By the way, furnaces with a fireproof door are safer than open grates, and allow you to manage the flow of warm air much better and easier. The only drawback is that sometimes the heat-proof glass may be covered with soot.