ResMed Mirage Quattro / Quattro FX Elbow Assembly CPAP Pillows & Comfort Accessories This is a standard universal

This is a standard universal CPAP breathing tube

Medium & Large -- to either shrink or enlarge the overall frame size as needed

It monitors your breathing in real time and automatically adjusts pressure throughout the night - so you get exactly the airflow you need

ResMed filters are designed to prevent debris and pollen from entering your CPAP or VPAP Machine

ResMed Mirage Quattro / Quattro FX Elbow Assembly CPAP Pillows & Comfort Accessories This is a standard universalReplacement Elbow Assembly For ResMed Mirage Quattro Quattro FX Full Face Masks. Includes Elbow, Valve, Clip and Swivel. If you need the Elbow only please see here.