12″x47″ (3 1/2 sq ft. approximately). Next generation panels with a raised ribbed back to allow for airflow and drainage. Designed to be installed from left to right, and bottom to top. To be installed with non corrosive deck screws. Minimum of 7 screws around the flange and 2 through the face (between the stone pattern.) smaller size for a more random pattern. There is 1 and 4 pattern repeat in all of the Faux Stone product lines.