- About Us
Face Length (Vertical Axis)
Face Width (Horizontal Axis)
|Fit Number||First Try||Then Try|
|3-7||Medium||Small OR Large|
On narrow faces, the action of pulling on the arms of the mask to tighten it causes the height of the mask to increase. The narrower the face, the more likely a smaller mask will be a better fit.
Face should be relaxed when taking measurements.
No set of guidelines can ensure that you have the right size mask for your face. You must confirm the fit performed according to OSHA regulations 1910.134.