Most prefinished flooring has beveled edges and finishes, which defend the finish from chipping all through set up and conceal unevenness that will be sanded sleek on unfinished Wooden. When installed, the bevels type a small groove, some as deep as ⅛ inch; Other people have hardly apparent micro-bevels. https://sunilkeshari.com/how-to-clean-prefinished-hardwood-floors/