The 6 Foot CPAP Hose with Sensor Line for Puritan Bennett 418A, 420E, 420S, 425 and Knightstar 330 is a six foot hose with the sensor line installed. It is required for use with the GoodKnight 418A, 420S and 420E CPAP machines. It is also required for the GoodKnight 425 and KnightStar 330 BiLevel machines. This hose is not compatible with any other machine.
This is a 22mm diameter hose that is 72 inches and is not for use with machines that require a heated hose or a 15mm hose.
This hose is not required for the 420G and 420SP CPAPs, which do not require a sensor line. Those CPAP machines use a standard CPAP hose.
All CPAP.com brand hoses are smooth bore, meaning there are no ridges inside the hose for air pressure to resist against. The supportive molded plastic frame is located on the outside of the hose. This design provides consistent pressure delivery and ensures a quieter performing hose.