Lagom Anthracite is a 12" x 24" porcelain tile. The face carries the even, slightly clouded tone of poured concrete. A matte surface holds light rather than reflecting it. A PEI 3 rating suits any residential floor. It carries an R9 slip rating, normal for a dry interior floor. It is frost resistant, so it can run from an interior floor onto a covered porch or patio. A box holds 8 pieces and covers 15.5 square feet. Made in Spain.