Keep your Nova Nasal Mask operating in full stealth mode with this replacement diffuser: engineered to soften exhaled airflow, cut down noise, and eliminate distracting drafts. Whether you’re sleeping next to someone or simply prefer a quieter night, this diffuser helps maintain whisper-level performance so your therapy stays calm, balanced, and undetectable. Key Features Precision Fit for the Nova Mask: Designed specifically for the Fisher & Paykel Nova Nasal CPAP Mask. Noise-Softening Design: Reduces sound and disperses airflow for quiet, partner-friendly therapy. Comfort That Stays Invisible: Supports smooth, draft-free nights for uninterrupted sleep. Pro Ninja Tip If your mask suddenly gets louder or breezier, replacing the diffuser is one of the fastest ways to restore full stealth operation.