These Bias Flow Diffuser filters are for use with the FlexiFit™ 405/406/407 Nasal CPAP Masks and Oracle™ 451/452 Oral CPAP Masks by Fisher & Paykel. Includes 10 filters per pack.
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These are replacement Bias Flow Diffuser filters for the Fisher & Paykel FlexiFit™ 405, 406, 407 Nasal CPAP masks and the Fisher & Paykel Oracle™ 451, 452 Oral CPAP masks. They come in packages of 10 filters. These filters replace the current air diffuser for the popular Fisher & Paykel CPAP masks and they fit right into the elbow of the FlexiFit™ 405/406/407 and Oracle™ 451/452.