alfombra minera acanalada alfombra acanalada para minera 4 line mining rugs,the thickness is 12mm. alfombra minera acanalada alfombra acanalada para minera 4 line mining rugs, the surface material is polypropylene, the backing is latex. alfombra minera acanalada alfombra acanalada para minera 4 line mining rugs, the size is 2x12meter or 2x24 meters.