Want to add a heated hose to your CPAP or BiPAP? The React Health ComfortLine is a universal heated tube with its own standalone power supply, so it works with almost any CPAP or BiPAP that uses standard tubing and a water humidifier, without drawing power from your machine. Copper wires embedded in the tube walls are gently warmed by the included medical-grade power supply, keeping the humidified air at a steady temperature from the machine to your mask and preventing rainout (the condensation that collects in an unheated hose). It measures about 71.25 inches long with a 19 mm inner diameter and standard 22 mm cuffs, and must be used with water humidification. Note: Philips Respironics System One devices running software earlier than version 1.24 are not recommended for use with the ComfortLine. Browse all CPAP hoses and tubing, and learn how to prevent rainout.