These filters are NOT aftermarket (generic) filters.
They are Manufactured by Philips Respironics.

Note: For enhanced filtration, use reusable filters along with > DISPOSABLE FINE FILTERS (not included)

Note: These Reusable filters are NOT compatible with the NEW DreamStation 2 CPAP Machines

For the NEW DreamStation 2 Reusable filters, please go here > DreamStation 2 Reusable Filter