Casey from SWISCO responded:
September 28, 2023
Hello, I would recommend starting by comparing the specifications of the 39-329 and 39-330 Roto operators to yours. These are used with the 39-553 and 39-554 sash brackets, as well as the 39-232 handle. If you need new hinges as well, take a look at the 36-048 set with a 10" base. Thank you! Alternate image for 39-330
Side profile view with measurements
Dimensions for 39-554
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