The protective films are used for protecting the visor of the Sundström SR 200 full face mask against fouling, e.g. during spray painting.
The SR 343 is of spherical shape and fits the SR 200 with polycarbonate visor. The SR 353 is flat and fits the SR 200 with glass visor.
The outer edges of the film are provided with double-sided adhesive tape that keeps the films in place. No more than three films should be fitted at a time. The film is delivered in a pack of ten.