These ultra fine filters are designed for use on some of Respironics older CPAP machines including the Choice, Choice LS & REMstar. Ultra fine filters are disposable; for optimal performance they should be changed regularly when they appear soiled or discolored.
Dimensions: Oval Shaped. Approximately 6 inches long, 4.75 inches wide.
- Respironics Choice
- Respironics Choice LS
- Respironics REMstar