Modular with quick assembly. Starting section assembly includes 2 pre-cast ballasted posts, 2 trusses, 2 rails and hardware. Add-on section assembly includes: 1 pre-cast ballasted posts, 1 trusses, 2 rails and hardware. Mounting structure is 100% hot-dipped galvanized. Ideal for large commercial and utility-scale installations. Rugged, weather-resistant designs. No Ground Penetration.