The title of this article is conjectural. While the information presented in this article is canonical, the article subject lacks an official name, thus the title is a conjecture.

Portable breathing units are devices that provide oxygen to its wearer and or filter CO2. They consist of a large tank, several hoses, and a face mask. The Daedalus was at one point equipped with 20 such units; In 2006, all of these units were used after the Daedalus' life support system failed following a battle with a Wraith Hive ship. (SGA: "No Man's Land")


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