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by Anonymous on May 19, 2011
Wish you carried this in more then a 2 pack. Changing this once a month, makes me call your company all the time.
by Anonymous on May 21, 2011
Extra filtration for you, with these filters. Don't forget to change these filters, just like you change the filters in your car or home heating system.
by Anonymous on June 28, 2012
Poor design. They come lose.
by MARK on January 6, 2016
poor design. difficult to keep in place. fall off very often
by susanarndt on October 28, 2013
The filters that I've ordered for years have been a Respironics product; these are not, though the website did not specify they were made by another company. They don't seem to be the same quality. Time will tell. It's had to rate them since I don't know if they will hold up as well as the Respironics brand.
by Andre on January 29, 2016
They work great. Just wish you could get them in more than a 2 pk
by Anonymous on March 19, 2012