These Disposable Foam CPAP Filters are essential for your device, as they filter the CPAP airflow of airborne particles and pollen. They are designed for use in all 3B Medical RESmart and Luna Units (CPAP, Bilevel or Auto). Foam filters effectively filter airborne particles, dirt, and pollen from your CPAP airflow to ensure clean air Disposable; should be replaced every 2 to 4 weeks for best device performance Fit all 3B Medical RESmart and Luna Units (CPAP, Bilevel or Auto) Dimensions: 3-1/4" x 1-5/8" Quantity: 2 filters/pack
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