The Brevida Diffuser is located on the elbow of the Brevida Mask system.
The Diffuser is washable and reusable, making it very ecofriendly. It should be washed weekly in warm, mildly soapy water, rinsed, and left out to air dry. This is an optional feature of the Brevida mask, but will assist in reduction of sound levels coming from the exhaust valve as well as disperse airflow. The Diffuser should be replaced when visibly worn or damaged.