Abstract: A filter assembly for use with a chemical oxygen generator. In some embodiments, the filter assembly is external to the chemical oxygen generator. In one embodiment, a first end of the filter assembly includes an inlet that couples to an outlet of chemical oxygen generator and a second end of the filter assembly includes one or more outlets that couple to one or more oxygen masks, tubes or other oxygen-delivery devices. The filter assembly houses a filter media for removing unwanted containments from the generated oxygen. In non-limiting embodiments, the filter assembly is housed in a drop down box or other housing of an aircraft or other desired application.