Iso-Gard HEPA Light is an advanced, highly hydrophobic bacterial/viral filter, HEPA class 13. Bacterial/Viral filtration efficiency of 99.9999+% Item Code 28002 includes gas sampling port with 22 mm ID/15 mm OD x 22 mm OD/15 mm ID connectors. ID connectors, ideal for machine filtration applications May be used as an HME (see moisture output on chart)"