This is the Foam Filter for the following Respironics CPAP and BiPAP Machines:
System One Series CPAP and BiPAP Machines
M Series CPAP and BiPAP Machines
SleepEasy CPAP Machine
This foam filter should be inserted into the filter compartment after the UltraFine (White) filter. Remove this filter regularly to wash with warm water and mild soap. DO NOT use strong detergents. Air-Dry only and do not insert into the machine when wet or damp.
Measures 1 15/16" x 15/16"
Pack of 4 Pollen Filters
RECOMMENDED REPLACEMENT EVERY 2- 3 MONTHS
Hypoallergenic & Latex Free
Return on Warranty Issues Only