substantially a cylindrical shape with a bottom 22 and a top 30 in the preferred embodiment the chamber is molded from a lightweight resilient material but it is further contemplated that the chamber be made of aluminum steel brass or copper the preferred embodiment of plastics allows the extinguisher to be placed in locations that could cause corrosion of metals the top 30 is screwed onto the chamber but it could also be attached with a bayonet or latching mechanism the top 30 fits on top of an enlarged opening 72 on the chamber to allow easier filling of the chamber 20 with fire retardant materials a wall hanging mechanism can be incorporated into the top of the extinguisher wrap around the body of the cylinder or fork the top of the extinguisher in this figure the fire extinguisher is shown with a wall mounting mechanism where the fire extinguisher sits on top if the bracket the bracket is described with more detail below a handle 40 allows the operator to hold the extinguisher in an upright orientation when it is being used the fire extinguisher can also be stored and or transported in the upright orientation but the upright orientation is not critical for the storage or operation of the extinguisher within the handle 40 a pressurized canister 50 is located while in the preferred embodiment the pressurized canister is shown within the handle other locations such as within the top of the extinguisher or adjacent to the hose are contemplated the canister 50 consists essentially of a pressurized chamber but canisters of different types of gas are possible that do not promote spreading of the fire because the gas within the.