Window opening mechanism replacement

A handy person from Bedroom says:
I am looking for a window opening mechanism LH and RH side. Do not have a part number for the LH side
Thumbnail of the uploaded file named image.jpg
Thumbnail of the uploaded file named image.jpg
Thumbnail of the uploaded file named image.jpg
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Casey from SWISCO responded:

Hello,

Take a look at our Roto 39-341 and 39-342 window operators and see how the dimensions compare to yours. If you need new brackets to mount them to the window sash, see our 39-534 and 39-535. Thanks for posting!

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