Sunstone Groa 16.25'(4) is a 24" x 24" porcelain tile. The face carries the movement of quarried stone. The body is left unglazed, so the colour runs through the tile rather than sitting on it. It carries an R10 slip rating, which is the usual choice for a kitchen or bathroom floor. It is frost resistant, so it can run from an interior floor onto a covered porch or patio. A box holds 4 pieces and covers 15.5 square feet. Made in Italy.