In the end the fireplace is installed by a stone mason, who will connect the carved piece or pieces directly to the wall with specialized galvanized wall ties. The shaped stone pieces are usually connected together with bronze pins, the gaps filled in with mortar, and finally sealed with grout material. The whole process can take many days to complete, but the result is a magnificent custom modern fireplace with a distinctive style.
Aside from keeping the warm air from escaping, the doors act to keep the hearth clean just as a fireplace screen used to do in the olden days. With the doors closed, ashes and embers don't scatter about the room, keeping the carpet or rug clean and scorch-free. The doors also have built in devices that divert air towards the bottom of the fireplace. These vents make the fire burn brighter and easier to light.