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Bob from SWISCO responded:
December 30, 2021
See our 39-253LB & 39-253RB, or the 39-438B & 39-439B operators. As you can see these two sets are very similar. The only real difference is the appendage used at the end of the straight arm. The video below explains. Compare to your old hardware to see which set you need. For nested covers and handles that work with either set, see our 39-375 and 39-376. |
