Yellow slabs, could use a clean (used in a fireplace, never cemented or glued, some minor staining including some wax blobs)
4x larger at 12 inches x just under 21 inches. 2x smaller at 6 inches x just under 21 inches. All are approx 2 inches thick.
Must go this weekend.
Check out the pictures at:
https://trashnothing.com/pics/145328