This is a true “hollow” mantel piece which is what we wanted. A little disappointed that only the face is rough hewn and the tops and bottoms and sides are just stained pine plank  otherwise it would have been five star .... for mounting it comes with a 2x4 to mount on the wall and the mantel piece slides over. Since we are mounting to a brick fireplace we had to go purchase concrete/masonry screws (didn’t come with )