15805-2-NX-25 / 2ft Adult Nasal Cannula w/ Nox Compatible Filter Connector (Box of 25) SleepSense Adult Nasal Pressure Cannulas are soft, flexible and designed specifically for pressure monitoring.  The 15805-2-NX includes Nox Compatible Filter Connectors that easily attached to Nox sleep recorders.  Sold in boxes of 25 units. Each box includes: 15805-2    2ft Adult Nasal Cannula 15819        Nox Compatible Filter Connector Available in 2ft or 7ft length.