Universal window double arm operator

A home owner from Hendersonville Tennessee says:
Universal window double arm operator
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Tom from SWISCO responded:

There is no such thing as a universal operator, unfortunately. Each part has to be replaced with something specific. In your case, it looks like you have either our 39-253LB or 39-438B . The only difference between these two products is the style of the slider at the end of the arm, which is not visible in your photos. The video below will explain what I mean.

Regardless of which one you go with, you'll also need a new 39-451 cover.

How to Orient a Dual-Arm Operator
How to Orient a Dual-Arm Operator
VIDEO
WATCH >
Comparing the 39-253LB & 39-438B Operators
Comparing the 39-253LB & 39-438B Operators
VIDEO
WATCH >
Anatomy of a casement window
Anatomy of a casement window
VIDEO
WATCH >
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