Superior performance and security in the most demanding environments. Driven by innovation and market demand the ARCA – IEC is the ideal and cost effective alternative to sheet steel cabinets or fiberglass enclosures needed in harsh and demanding environments. This enclosure is a true game changer, offering the market the largest UL listed, NEMA 4x polycarbonate box in the world, sized up to a whopping 32 x 24x 12 inches.