Levels of Quality, Sizes, Edges, and Joining Systems. Shaw classifies its floors as Good, Better, Best, and Superior. Most floors fall in the Better or Best categories, with some floors falling into both categories at once (doubling the wear layer thickness bumps a product up to the Best level).
If your shelf projects 1 1/2 inches or less, there must be at least six inches between the top of the fireplace and the mantel. Any parts of the mantel that project more than 1 1/2 inches must be at least 12 inches from the top of the fireplace.
When Ordering a mantel you will want to make sure it works correctly with your facing. 'Facing' is another name for the material surrounding your fireplace opening. This is usually tile, slate or marble. Facing is generally six inches (left to right) on each side and eight inches on the top.