Surgical Mask covers the user’s nose and mouth and provides a physical barrier to fluids and particulate materials. The surgical masks referenced in this guidance document include masks that are labeled as a surgical, laser, isolation, dental or medical procedure masks with or without a face shield. Professional ventilation/dustproof/filtering bacteria, Four layer filtration protection effectively Mask covers the user’s nose and mouth and provides a physical barrier to fluids and particulate materials. The surgical masks referenced in this guidance document include masks that are labeled as a surgical, laser, isolation, dental or medical procedure masks with or without a face shield. Professional ventilation/dustproof/filtering bacteria, Four layer filtration protection effectively Mask covers the user’s nose and mouth and provides a physical barrier to fluids and particulate materials. The surgical masks referenced in this guidance document include masks that are labeled as a surgical, laser, isolation, dental or medical procedure masks with or without a face shield. Professional ventilation/dustproof/filtering bacteria, Four layer filtration protection effectively Mask covers the user’s nose and mouth and provides a physical barrier to fluids and particulate materials. The surgical masks referenced in this guidance document include masks that are labeled as a surgical, laser, isolation, dental or medical procedure masks with or without a face shield. Professional ventilation/dustproof/filtering bacteria, Four layer filtration protection effectively Mask covers the user’s nose and mouth and provides a physical barrier to fluids and particulate materials. The surgical masks referenced in this guidance document include masks that are labeled as a surgical, laser, isolation, dental or medical procedure masks with or without a face shield. Professional ventilation/dustproof/filtering bacteria, Four layer filtration protection effectively