Tom from SWISCO responded:
November 29, 2023
Hello! This operator looks very similar in design to our 39-220B. The only thing is that the link arm on our product has a slight offset. I think I see one in your photo, but it's hard to make out. You should verify that detail before you buy anything. It's also worth noting that the cover on or 39-220B is sold separately. If yours can be removed then you can just reuse it, but if that's not possible then I suggest our 39-452. |
Tom from SWISCO responded:
November 30, 2023
That's normal. Older versions of this operator weren't designed to allow the cover to be removed, so they're permanent fixtures. Our 39-220B is likely a newer version of your original. The 39-220B and 39-452 are sold separately but are fully compatible. The cover just snaps over the operator after the operator is installed. They otherwise function identically. |