HEPA 20 cartridge filter

The HEPA 20 cartridge filter is a quest item in Fallout: New Vegas.
==Characteristics==
They are used for repairing the air filtration system in the Brotherhood of Steel's hidden bunker for the Still in the Dark quest. Since it is a quest item, it cannot be dropped without the use of console commands.
==Location==
Six filters can be found within Vault 22, in a locker on the oxygen recycling level. The room can only be accessed by the vault's adjoining cave system due to the normal entrance being blocked off. The two cave entrances can be found on the food production and pest control floors: without fixing the elevator, the only available entrance is on food production, behind the door requiring the Vault 22 cave door keycard to unlock (controlled via the nearby terminal).
==Related quest==
* Still in the Dark
==Behind the scenes==
The HEPA 20 cartridge filter is based on the real world equivalent. A HEPA filter stands for "high-efficiency particulate air" filter and the number indicates how effective the filter is at controlling contaminants. The "20" indicates that the filter seen in-game would surpass the highest efficacy requirements of the real world, providing better filtration than those required in hospitals and surgical centers. 
==Gallery==
Vault 22 oxygen recycling map.png|Location of the filters on the local map
Category:Fallout: New Vegas miscellaneous items
Category:Fallout: New Vegas quest items
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