Fairwood Fencing, made of wood-filled polyethylene, will not rot, splinter, or split. Resists termites and carpenter ants. Cedar tone boasts UV. inhibitors to minimize color fading. Boards measure in. thick and either 3 or 5 ins. wide. Feature cedar grain on both sides. For added strength, opt for board that measures 11/8 ins. thick by 3 ins. wide and has a steel-reinforced support rail to prevent potential creep from temperature changes and long-term load. All boards work with standard metal or wood fence posts.