The filter pack includes 2 sets of white HEPA filters, each in its black filter casing. This is the same one as the original HEPA filter that comes with 'Dylon' cordless vacuum cleaner. Therefore this pair of HEPA filters can only be used in ROOMIE REC Dylon Cordless Stick Vacuum Cleaners. Please be careful and confirm if you have a Roomie TEC "Dylon" Cordless Stick Vacuum Cleaner before you purchase this item in case you buy a improper one. It is washable and re-useable, however if it is not completely dried out, the vacuum suction will be reduced (due to the filter being blocked by water). Also for higher standards of air purification and reducing allergies, it is recommended to replace the HEPA filter every three months.
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