NBB-10271 is a non-metallic enclosure (Style B) designed for indoor electrical applications requiring robust protection and compliance with industry standards. The unit features a solid body and clear polycarbonate cover with UL94V-0 flammability rating and UV stabilization, meeting UL508 Type 1, 2, 3, 3R, 4, 4X and NEMA Type 1, 2, 3, 3R, 4, 4X, 12, and 13 standards with IP65 protection per IEC529. The enclosure includes a modified polyurethane gasket, 36 mounting bosses (0.410 inch diameter with 0.166 inch diameter holes, 0.325 inch deep) that accept M5 metric or #10 standard sheet metal screws, and comes complete with four wall mounting brackets and four M5 × 10mm truss head machine screws. This enclosure is ideal for control panels, electrical distribution, and equipment protection in industrial and commercial environments where moisture resistance and electrical safety compliance are essential.