CPAP tubing (also called a CPAP hose) connects the CPAP machine or humidifier to the CPAP mask or connects the machine to the humidifier.
Most machines come with standard six foot tubing, but many other types are available. ... This tubing is universal and will fit on all masks and all machines. Most CPAP machines come with standard tubing, which is made of flexible, durable plastic and is around 6 feet long.