NEW Apria Healthcare/ResMed CF-36850-2 Filter Packs - 40 Filters (20 Packs Total). The Apria CF-36850-2 is a disposable pollen and dust filter designed for ResMed CPAP machines, primarily the AirSense 10, AirCurve 10, and S9 series. These white felt filters trap larger particulates to protect your machine and ensure clean airflow. New and manufacturer sealed. Free domestic shipping.