Suitable for use on Class B (liquids and gases) and Class C fires (energized electrical equipment). The Mariner 10 unit is fitted with a pressure gauge that provides at-a-glance status, is manufactured from lightweight aluminum and a tough aluminum valve assembly. Features bilingual nameplate and carton.. Features Mariner 10 Fire Extinguisher; 12X more corrosion resistance than industry saltwater test standards; Easy and reliable operation; Specifications Weight: 3.9 lbs; .