This specification covers the following types and classes of extinguishers:
- Type I Stored pressure type
- Category A - Operational Temperature range −40 to +140 °F (−40 to +60 °C)
- Category B - Operational Temperature range +35 to +140 °F (+1.7 to +60 °C)
- Type II Cartridge operated type
- Category A - Operational Temperature range −40 to +140 °F (−40 to +60 °C)
- Category B - Operational Temperature range +35 to +140 °F (+1.7 to +60 °C)