Ultra Fine Filters for PureSom, Zzz-PAP & ComfortPAP CPAP Machines - 2 Pack
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AG Industries - AG-7511-2
These ultra fine filters (which may come in yellow or blue) are designed for use with all Puresom, Zzz-PAP, and ComfortPAP machines. Ultra fine filters are disposable; for optimal performance they should be changed regularly when they appear soiled or discolored.