ResMed S9 CPAP Standard Filter, 2pk by Sunset Medical
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<div style="text-align:left"><b>[Product Information]</b></br><ul><li class="showHiddenFeatureBullets"><span class="a-list-item">
                    Superior Quality and Filtration
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                    Fits the ResMed S9 platform only
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                    Dimension  2 1/8” x 1 7/16"
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