Does anyone know how to find out what size of scba mask will fit your face? The drager fps 7000 comes with small, medium and large but it doesn't provide any measurements, I am worried the mask won't seal properly if got the wrong size.
Also does anyone know why some of the drager fps 7000 mask uses blue valve plate instead of the normal red? Does it still provide positive pressure? The seller call it "Drager FPS7000 sentinel" tho so not sure if it is a different model?
Also does anyone know why some of the drager fps 7000 mask uses blue valve plate instead of the normal red? Does it still provide positive pressure? The seller call it "Drager FPS7000 sentinel" tho so not sure if it is a different model?
