Available in packs of 2 from both Respironics or our cpapusa.com high quality VALUE Brand.
These replacement reusable foam filters fit the following Respironics BiPAPs - Synchrony, Pro, Duet LX, Harmony. They are similar in shape to the smaller size versions for the REMstar CPAP and BiPAP, but are not interchangeable.
Filter 4.75" x 2.375" x 0.375"
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