The ARCA IEC from Fibox is said to be the largest UL-listed NEMA 4X Polycarbonate Enclosure. Made in the European IEC standard sizes, this enclosure is available up to 31.5x 23.5 11.5 in. The ARCA IEC cabinet enclosure is made of impact-resistant polycarbonate and will not dent, rust, crack or bloom like steel or fiberglass.…