Hydrophobic filters provides airborne contaminant and overflow protection.
This hydrophobic/high-efficiency particulate air (HEPA) filter has a bacterial filtration efficiency (BFE) of 99.99%+; its viral filtration efficiency (VFE) is 99.99%+.
Diameter of filter is 57 millimeters.
Connection to patient: 1/4 to 3/8 inch hose barb
Connection to machine: 1/8-inch threaded NPT (national pipe thread) male