identify operator hardware

A quick learner says:

3 pics, bottom of window its a 12 inch track 

Your help is greatly appreciated.

Thumbnail of the uploaded file named window.jpg
Thumbnail of the uploaded file named window 3.jpg
Thumbnail of the uploaded file named window 2.jpg
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Emily from SWISCO responded:

Hello!

Your operator reminds me of our 39-187 and 39-188 but compare our dimensions with yours to confirm these match up to your old assembly. I'm afraid we don't have a hinge set with a 12" base but look over the specifications for our 36-048 and 36-049 . Note, you'll want to replace the top and bottom hinges at the same time. 

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