Sturdy Fiberglass Construction: The fiberglass junction box is meticulously crafted from heavy-duty, fiberglass-reinforced polyester using precise cutting and molding. It offers superior wear resistance and ensures reliable protection for your equipment in harsh environments. Outer Dimensions (H × W × D): 15.7 × 15.7 × 7.9 in / 40 × 40 × 20 cm Inner Dimensions (H × W × D): 14.6 × 15.6 × 7.5 in / 37 × 39.5 × 19 cm IP66 Waterproof Grade: The high-quality sealing strip provides excellent waterproof and dustproof performance, ensuring an IP66 protection level. The fiberglass enclosure effectively prevents dirt, debris, and moisture from entering the box, even when the lid is open—keeping all circuits protected and organized. Reinforced Lock & Hinge: This clear fiberglass enclosure is equipped with a premium lock core for enhanced security and reliability. The durable hinged lid design ensures that the door remains sturdy and resistant to deformation or damage from external pressure. Convenient Operation: The enclosure includes a removable galvanized steel mounting backplate and integrated T-nut mounting slots for easy installation of electrical components. It also comes with complete accessories and pre-drilled mounting holes for quick wall installation. Versatile Application: Designed for both indoor and outdoor use, the fiberglass NEMA enclosure provides excellent corrosion resistance and circuit protection. Ideal for industrial equipment, residential systems, construction sites, squares, and courtyards.