ResMed ClimateLineAir Heated Tubing. Ref# 37296 Compatibility: It is compatible with the ResMed AirSense 10 and AirCurve 10 series devices. It is not compatible with AirSense 11 or S9 machines. Function: The ClimateLineAir tubing is heated and works with the device's built-in humidifier to provide a consistent, comfortable temperature and humidity level to the mask. Benefits: It helps prevent common side effects of CPAP therapy such as condensation buildup (known as "rainout"), dry throat, dry mouth, and nasal irritation. Features: It includes a built-in temperature sensor near the mask end of the tube to maintain the desired temperature. It enables the automatic Climate Control feature on compatible machines. The tubing is approximately 2 meters long (6.5 ft) with an inner diameter of 15 mm.