MSA G1 SCBA Operating Manual page 81

(4) Take one end of the wire frame and push it up into the
facepiece so it follows the edge where the lens and the
faceblank meet.
a)The end of the wire frame must be positioned into small
pockets in the faceblank on the edge of the lens.
(5) Repeat step (4) on the opposite side.
(6) The lens frame can be adjusted up/down and in/out
depending on the facial features. Don the facepiece and
adjust to optimize visibility.
G1 SCBA
Spectacle Kit
US
81