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.
And the depth of your fireplace is 22.5 but my guess is that there are no bricks in the back that means you will probably need to add some shielding there. You will not be able to heat your basement with a stove on the main floor so what you are looking for is a unit that can heat 1800 sqft.