Browse Polycarbonate Enclosures from top brands like Integra Enclosures and Attabox. These plastic enclosures are the most durable non-metallic NEMA enclosures available on the market today. Much lighter than standard aluminum or steel enclosures, these units (also known as polycarbonate enclosures) are perfect for smaller applications where a heavy metal enclosure would be problematic. Polycarbonate electrical enclosures are also 45% to 65% less expensive than similarly sized metallic units. IP68 rated for dust-tight & waterproof performance. These electrical enclosures offer protection from dust, rain, sleet, snow, splashing water, waves, hose-directed water with superior impact and flame protection.