316 is also known as marine grade stainless steel. It contains 16-18% chromium, 10-12% nickel and 2-3% molybdenum, and the rest is iron and trace elements. It is more corrosion resistant than 304, particularly when exposed to chlorides (for example, sodium chloride, known commonly as salt). This makes it a better choice for marine environments. This could include roadside cabinets in seafront locations where winter storms can batter the coast with forceful waves. These enclosures from Schneider are up to the task, with a solid metal door and hinged opening. Sizes range from 300 x 200 x 150 to 1200 x 1000 x 300mm.