These ultra fine disposable filters by 3B Medical can be used with all Luna CPAP and Bilevel machines. Typical replacement is once every two weeks. 
 
Product Features:
Higher filtration capabilities compared to standard, reusable filters
Original Equipment Manufacturer (3B Medical) 
Easy care - just dispose of every two weeks (no need to clean or wash)
 
Purchase Includes:
Disposable filter (1 pack)
- NO PRESCRIPTION REQUIRED