CPAP machine filter designed for the Respironics Tranquility 7000 and 7001 CPAP machines. Contents include a single foam filter. This black foam filter is approximately 5" long and has a trapezoidal cross section.
These CPAP filters are white, ultra-fine filters to remove very fine particles such as dust and smoke from the air. These should be replaced approximately every two to four months or as needed depending upon your environmental conditions. For example, if you live in a particularly dusty area or a particularly humid area, you may need to change the CPAP filters more often. If the CPAP filter looks dirty it needs to be replaced.