For use with the Puritan Bennett Knightstar 330 BiLevel machine, this black foam filter comes 1 per pack.
Machine filters are an essential component in your Bi-Level therapy due to their ability to remove irritating dust and pollen particles from your Bi-Level airflow. Not sure which Bi-Level or BiPAP filters is right for your machine? Please contact CPAP Supply USA for help with choosing the correct filters.
