Walter Kidde Mariner 5 5bc 466635mtl Mariner 5 Fire Extinguisher by Kidde®. Suitable for use on Class A (trash, wood & paper), Class B (liquids & gases) and Class C fires (energized electrical equipment). The Mariner 5 unit is fitted with a pressure gauge that provides at-a-glance status, is manufactured from lightweight aluminum and a tough aluminum valve assembly. This versatile, reliable extinguisher is designed to be an effective and easy-to-use tool when combating both common and hazardous fires. It's built with durable, rust- and impact-resistant materials that can stand up to the elements.