Amazon.com: Resmed Airfit F20 Cushion replacement (M ...
That the seal was silicone instead of foam was extra incentive because it allows for easier cleaning. In his words: 'The hose clipped right on just as it should, so there are no problems with fit. The mask seals on my face okay, even with varying lengths of facial hair, though I do have to tighten the straps down pretty far and the silicone ...
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