Diseases under the heart disease umbrella include blood vessel diseases, such as coronary artery disease; heart rhythm problems (arrhythmias); and heart defects you're born with (congenital heart defects), among others.
They are two types available: those rated for Class B and C fires, and those rated for Class A, B, and C fires. These extinguishers are available from 2 1/2 to 30 pounds. Caution: when used indoors, these extinguishers will produce a thick cloud of dust, which obscures vision and may cause choking.
Fire Extinguisher Maintenance and Inspection. Fire extinguishers are devices commonly found indoors and are used to douse fire and prevent its spread. They are small metal canisters that contain compressed gas (usually nitrogen) that, when activated, propel a directed spray of flame-retardant chemicals.