AirSense 11 HumidAir Humidifier Water Tub by ResMed The ResMed AirSense 11 HumidAir Humidifier Water Tub is the replacement water tub for the new ResMed AirSense 11 AutoSet CPAP Machine. It can be replaced by the AirSense 11 Side Cover if you do not wish to use the built-in humidifier with the AirSense 11. Key Features: Replacement Water Tub for ResMed AirSense 11 CPAP, Elite and AutoSet Choose Between Standard (hand wash only) or Cleanable (top rack dishwasher safe) 380 ml Maximum Capacity Cleaning and Maintenance DailyEmpty the water tub and rinse thoroughly with drinking-quality water. Allow it to air dry out of direct sunlight. Weekly Soak the water tub in a basin of warm soapy water for up to 30 minutes. Use a mild detergent that is free from bleach and other harsh chemicals. It is recommended to select the delicate or glassware setting on the dishwasher when washing the cleanable water tub. Please note that either water tubs should not be washed in temperatures higher than 55oC. Rinse thoroughly and allow to air dry away from direct sunlight.