Achieve cleaner, fresher air with the GoodKnight 314/318 Ultrafine Filter, designed to provide superior filtration for your CPAP therapy. This high-quality filter captures ultra-fine particles, including dust, pollen, and allergens, ensuring that the air you breathe during sleep is free from harmful contaminants. Its precision-engineered design helps maintain optimal airflow, enhancing the performance of your CPAP machine. Easy to replace and maintain, the GoodKnight Ultrafine Filter promotes a healthier, more comfortable sleep environment. Perfect for CPAP users looking to improve air quality and extend the life of their device.