HCPCS Insurance Code: A7039
These reusable foam filters are oval in shape and approximately 5 inches wide. There is a small notch on one edge of each filter. For optimal performance reusable filters should be washed weekly and replaced every 2-3 months or whenever they appear worn or damaged. Compatibility - Respironics REMstar, REMstar Choice, REMstar Choice LS. Respironics - Part 362521
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