7 ft. long wall channels CM83-4. This is a set of 6 each 7 ft long channels. Removable side stall walls can be made using our 7 ft. long wall channel designed to accept standard 2 inch lumber (1 1/2 inch thick). Attach the wall channels to your support posts or walls and slide the lumber into the channels. Measures 7 ft. long x 1 3/4" wide x 1" deep. Color: Black