![MSA Advantage Gas Mask Model 4100-H Respirator Full Face Mask MSA Advantage Gas Mask Model 4100-H Respirator Full Face Mask](https://gasmaskrespirator.com/wp-content/pics/MSA_Advantage_Gas_Mask_Model_4100_H_Respirator_Full_Face_Mask_01_idf.jpg)
![MSA Advantage Gas Mask Model 4100-H Respirator Full Face Mask MSA Advantage Gas Mask Model 4100-H Respirator Full Face Mask](https://gasmaskrespirator.com/wp-content/pics/MSA_Advantage_Gas_Mask_Model_4100_H_Respirator_Full_Face_Mask_02_vf.jpg)
![MSA Advantage Gas Mask Model 4100-H Respirator Full Face Mask MSA Advantage Gas Mask Model 4100-H Respirator Full Face Mask](https://gasmaskrespirator.com/wp-content/pics/MSA_Advantage_Gas_Mask_Model_4100_H_Respirator_Full_Face_Mask_03_vl.jpg)
![MSA Advantage Gas Mask Model 4100-H Respirator Full Face Mask MSA Advantage Gas Mask Model 4100-H Respirator Full Face Mask](https://gasmaskrespirator.com/wp-content/pics/vesywupop.gif)
Responder 4100-H with dual cartridge adaptor. Can be used for cartridges or supplied air with the appropriate adapter. I used it once for standby during an EHS consulting gig and it never got used. The mask looks perfect. No scratches on the lenses. MSA is the most high-end brand for PPE. Great for professionals, hobbyist, preppers, etc..
![MSA Advantage Gas Mask Model 4100-H Respirator Full Face Mask MSA Advantage Gas Mask Model 4100-H Respirator Full Face Mask](https://gasmaskrespirator.com/wp-content/pics/vesywupop.gif)