That means the filter is removable and after a few days of wearing it you can switch the filter with a new filter made of hepa bag. I have made my own filters from hepa fabric. How To Make A Face Mask Filter With Hepa Fabric Video Tutorial Download template with printer. Hepa filter mask template . N95 filtera type of niosh approved filter or filter material which captures at least 95 of airborne particles and is not resistant to oil. This is a safe face mask that if built properly should be donated to your local emergency services. The hospital has created an online template for a 3 ply surgical pleated mask. Was referring to industrial hepa filters. N95 respiratora generally used term for a half mask air purifying respirator with niosh approved n95 particulate filters or filter material ie includes n95 filtering facepiece respirator or. To make your face mask a pocket mask close the bottom of the mask with a more temporary ...