Plastic distribution boxes, made from high-grade thermoplastics like polycarbonate and ABS, are lightweight, corrosion-resistant, easier to install, and more cost-effective, making them ideal for residential, light commercial, and corrosive or high-humidity environments. Not all metals are created equal. Galvanized steel boxes can handle physical abuse but will eventually rust when exposed to salty air near coastlines. Aluminum options are surprisingly lightweight - about 40% lighter than steel - while stainless steel remains the undisputed corrosion champion but. Planners regularly specify metal enclosures for commercial high-rises and industrial plants. Facilities adhering to strict fire-regulation codes often require non-combustible enclosures to maintain legal compliance. They also serve well in public infrastructure projects where physical vandalism. Metal distribution boxes, made from galvanized steel, stainless steel, or aluminum alloys, offer superior mechanical strength, fire resistance, thermal stability, excellent heat dissipation, grounding capability, and electromagnetic interference shielding. These features make them suitable for. The box should handle surge voltages up to 2kV. If metallic conduit or metal-sheathed BX cable terminates at a box, that container should also be metal so it can be bonded for continuity of grounding. This simplifies installations in bedrooms, living rooms, or other low-risk areas.