Truth window part

A home owner says:
My window will not close all the way. The crank will rotate and not close all the way. I have not been able to locate or identify the parts.
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Casey from SWISCO responded:

Hello,

Take a look at our video below that will help you choose the correct Encore operators for your windows. Thanks for posting! 

A home owner says:
Thank you for the information it was very helpful.
I also need to know if I need to purchase a separate crank operator cover when I order part 39-253 RB?
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Bob from SWISCO responded:

The 39-253RB does not come with a built-in cover. For this operator we recommend either our 39-376 or 39-451 Cover and Handle Kit. Either will work; it just depends on the style you prefer.

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