Hey guys, WWI Small Box Respirator.
According to the information I have been able to find online, the black metal piece is a flutter valve protector, introduced in late 1916 through to 1917. This design was dropped after that as it did not find favour in field.
The respirator box is a US made one as they were the only one using green and yellow filter boxes. It is common to find British made SBR's with US filters as the US was given many British masks for use in the field. I am also including period pics of British soldiers using the SBR's with the flutter valve protector as many people believe that these were US only SBR's.
![WWI Small Box Respirator 11461746.th](https://2img.net/r/ihimizer/img15/9534/11461746.th.jpg)
![WWI Small Box Respirator 43744766.th](https://2img.net/r/ihimizer/img30/2450/43744766.th.jpg)
![WWI Small Box Respirator 84129106.th](https://2img.net/r/ihimizer/img30/1039/84129106.th.jpg)
![WWI Small Box Respirator 64800066.th](https://2img.net/r/ihimizer/img15/9561/64800066.th.jpg)
![WWI Small Box Respirator 94482713.th](https://2img.net/r/ihimizer/img30/1913/94482713.th.jpg)
![WWI Small Box Respirator 26262251.th](https://2img.net/r/ihimizer/img39/323/26262251.th.jpg)
![WWI Small Box Respirator 20985443.th](https://2img.net/r/ihimizer/img32/2859/20985443.th.jpg)
![WWI Small Box Respirator 12580096.th](https://2img.net/r/ihimizer/img27/4859/12580096.th.jpg)
![WWI Small Box Respirator 10205024.th](https://2img.net/r/ihimizer/img39/9491/10205024.th.jpg)
![WWI Small Box Respirator 88264241.th](https://2img.net/r/ihimizer/img29/9218/88264241.th.jpg)
According to the information I have been able to find online, the black metal piece is a flutter valve protector, introduced in late 1916 through to 1917. This design was dropped after that as it did not find favour in field.
The respirator box is a US made one as they were the only one using green and yellow filter boxes. It is common to find British made SBR's with US filters as the US was given many British masks for use in the field. I am also including period pics of British soldiers using the SBR's with the flutter valve protector as many people believe that these were US only SBR's.
![WWI Small Box Respirator 11461746.th](https://2img.net/r/ihimizer/img15/9534/11461746.th.jpg)
![WWI Small Box Respirator 43744766.th](https://2img.net/r/ihimizer/img30/2450/43744766.th.jpg)
![WWI Small Box Respirator 84129106.th](https://2img.net/r/ihimizer/img30/1039/84129106.th.jpg)
![WWI Small Box Respirator 64800066.th](https://2img.net/r/ihimizer/img15/9561/64800066.th.jpg)
![WWI Small Box Respirator 94482713.th](https://2img.net/r/ihimizer/img30/1913/94482713.th.jpg)
![WWI Small Box Respirator 26262251.th](https://2img.net/r/ihimizer/img39/323/26262251.th.jpg)
![WWI Small Box Respirator 20985443.th](https://2img.net/r/ihimizer/img32/2859/20985443.th.jpg)
![WWI Small Box Respirator 12580096.th](https://2img.net/r/ihimizer/img27/4859/12580096.th.jpg)
![WWI Small Box Respirator 10205024.th](https://2img.net/r/ihimizer/img39/9491/10205024.th.jpg)
![WWI Small Box Respirator 88264241.th](https://2img.net/r/ihimizer/img29/9218/88264241.th.jpg)