This is our "piano" corner shelf.  It is approx. 10.5" x 8.75" - and it extends approximatley 8" diagonal from the corner.  A great sized corner shelf for your chin to enjoy.  A classy look, as well, with the beveled edge.  Made from pine wood.
These are a product that we do not make here at NWI - due to this, and due to our lack of specialized tools, we are sorry, but we cannot bevel the edges of all of our shelves.