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.
1 Requires 5 inches clearance from any wall. 2  1 ft clearance is recommended behind the toilet in order to access the burn chamber clean out port. 3  Should not be installed or operated in an area where there is a risk of an accumulation of flammable vapors or dust.  The chimney has to be a minimum of 7 ft long.