High Hazard Level 3 contents include materials that readily support combustion or present a physical hazard, including but not be limited to: aerosols, Level 2 and Level 3; Class I, II or III-A flammable or combustible liquids which are used or stored in normally closed containers or systems pressurized at less that 15 pounds per square inch (103.4kPa) gage; consumer fireworks, 1.4G; flammable solids, other than dusts classified as High Hazard Level 2, stored, used or generated in a manner creating a high fire hazard; organic peroxides, Class II and Class III; oxidizers, Class 2; Oxidizers, Class 3 which are used or stored in normally closed containers or systems pressurized at less that 15 pounds per square inch (103.4 kPa) gage; oxidizing gases and oxidizing cryogenic liquids; unstable (reactive) materials, Class 2; and water-reactive materials, Class 2.