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Face Mask Filter

Using the knowledge gained by making mask filters for the CSIRO in recent trials, we have created this highly efficient face mask filter.
100% Made in Australia from Hollow Conjugated Polyester for moisture absorption and extremely effective particle filtration.
Each pack contains
4 x A4 sheets, measuring 210mm × 297mm
for use with your own cotton outer.
Makes up to 24 refills.
Refills are washable but we recommend
replacing them after each use.