Suggested Retail: $31. MaxMed - HME Heat Moisture Exchange Filter for CPAP Machines - 10 Pack The MaxMed Heat Moisture Exchange filter for CPAP machines is designed to provide passive humidification during CPAP therapy. It attaches to a mask elbow to take in heat and moisture from the users exhaled breath, returning moisture to the air stream for inhalation. This filter must be used with compatible masks for optimal results and is suitable for up to seven nights of use. Manufactured in the USA, it is compatible with all CPAP, APAP, or BiPAP machines. Brand: MAXMED SHOP LLC. [Reference: KmpmadnPZqjkBHBl6NmfSk]. LOT STICKER: LPNNJ46XK8219. Type: Regular. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.