DeVilbiss IntelliPAP Series Black Foam Intake Filter 5-Pak

1 11⁄16" x 1 3⁄16" washable large-particulate foam filter. These foam filters are washable with warm water and a mild detergent. They should be thoroughly rinsed with clean water, and air dry completely, before placing back into your device. Reusable until they lose their integrity and no longer stay positioned within the intake port.