Home › System One Reusable Foam Filter | 1063091 System One Reusable Foam Filter | 1063091 Description Black Foam Reusable filter for the Philips Respironics System One 50 series and 60 series CPAP machine. DS260, DS460, DS560, DS660, DS760 1+ - $4.15 5+ - $3.74 10+ - $3.53 20+ - $0.89 Share 0 Tweet 0 Pin it 0