Filter covers for CPAP and BiPAP machines are protective accessories designed to shield air intake filters from dust, lint, pet hair, and environmental debris while allowing proper airflow. Made from breathable, often washable materials, filter covers help reduce surface contamination, extend the lifespan of internal filters, and support cleaner air delivery. They are especially useful in dusty environments, homes with pets, and during travel, where machines are more exposed to airborne particles. When used alongside standard CPAP and BiPAP filters, filter covers contribute to improved device maintenance, consistent therapy performance, and a cleaner sleep therapy experience for both home and travel use.