Bob from SWISCO responded:
April 30, 2020
Thanks for posting. This is a very old style operator that isn't made anymore. A very similar outdated operator with the same patent code came up once before, and in that case we posited that the 39-256B and 39-257B could be used as substitutes. But it looks like your bottom tab has three mounting holes instead of two, which frankly I've never seen before. Without seeing the link arm in the back, I don't know if this set could work for you, but it may be our best bet. Take a look, carefully compare to an undamaged version of this operator, and see what you think. |