The Replacement Reusable Diffuser Filter for Fisher & Paykel Brevida Nasal Mask – designed specifically for Brevida Nasal CPAP mask. The filter effortlessly snaps over the built-in exhalation holes on the mask elbow, significantly reducing sound levels by approximately 5 dBA. Designed to disperse exhaust airflow, it offers a quieter and more comfortable therapy session. In the box: (1) Filter
