Foam Diffusers for Various FlexiFit & Oracle CPAP Masks - 10 Pack

Fisher & Paykel Foam Diffusers for Various FlexiFit & Oracle CPAP Masks - 10 Pack

4.57 Average Rating of 7 Reviews Read Reviews



The Foam Diffuser fits in the elbow, beneath the filter cap, when in use. Each pack includes 10 Foam Diffusers. Diffusers should be changed regularly when soiled.

Product Information

  • Manufacturer Fisher & Paykel
  • Part Number(s) 900HC439
  • HCPCS Code E1399
  • GTIN / UPC Code 09420012414748
  • Country New Zealand, Mexico (Typical Origin)


Average Rating of
Total 7 Reviews
  • Two Sides are different

    At first I thought these were inferior to the one that came with the mask diffuser elbow. When I used one for the first time, it was quite noisy. I ended up putting two in to make it quieter. But when I looked at them again the next time, I saw that the two sides of it were slightly different. One side is harder and the other side is fluffier. I tried it both way and found out that if the hard side faces out it's pretty quiet. If the hard side faces in, it's quite noisy when I breath. Hard to believe that little difference makes such a big change in sound. I downgraded it one star because I think it should have been printed on the bag or posted in the instructions. Other than that, they are "very good"
    Written by R.K., 2016-03-03
  • Hard to find item for CPAP.

    I have only lately started using a mouth breathing CPAP mask (Oracle 452). Because of the location of the diffuser it needs changing more frequently. I was at a loss to find this small item until I checked the Direct Home Medical site. They responded promptly and now I have a reliable source.
    Written by Charlibart, 2015-06-28
  • Exact replacement

    The item was received via USPS less than a week after I placed the order. It was an exact replacement for the ones on my CPAP mask.
    Written by K Kenney, 2014-03-19
  • Does the job!

    Good filters, nice price too :)
    Written by Mark, 2014-03-18
  • Not quite right

    Correct material, but wrong cut. I can use them, I will just need to field modify for fit.
    Written by Bonuseventus, 2014-02-03
  • Foam diffusers

    These are great!!!!!
    Written by J. Maker, 2013-02-27
  • Diffusers

    I was reluctent to order before, because these filters looked nothing like those I have been using. The change in picture made it easier to decide. I am very pleased with the speed of delivery and the quality of purchase.
    Written by May, 2012-07-26