Features:

The universal CPAP filter is easy to install and most CPAP machines do not need to be recalibrated.
The universal fit inline filters are disposable and the white filter material should be replaced once it becomes dirty.
The filter is made of ultra-thin material to minimize airflow resistance and improve your breathing comfort.

Package Includes:

8 x Cpap Filters

Specification:

Compatibility: Compatible with most machine
Size: filters Suitable for 22mm Standard tubing and heated tubing even the the elbow.

Note:

please replace it in about 4 weeks.