Casement window operator - straight

A landlord from Minnesota says:
October 8, 2019
You guys have the exact part I need but it's too short. You have a Caradco window crank - Product Code 39-028. It has the screw holes in the correct place and everything but it's too short. Can you help me find the exact part with a longer straight arm? Or can you help me identify the manufacturer that makes the operator with the screw holes like the part you have?
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Bob from SWISCO responded:
October 14, 2019

Thanks for writing in. I can't say for sure what you need without knowing the exact length of your operator's straight arm. The 39-013 and 39-014 have arms of 13-1/2". If you have a length in between this set and the 39-028, then I'd simply opt for the 9-1/2" 39-028 (or, the 39-028E and 39-027E, which are the same but more modern in style). The window won't open as far but they still should work for you. Let me know what you think. 
A landlord from Minnesota says:
November 5, 2019
Do they come in both left and right opening windows?
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Bob from SWISCO responded:
November 6, 2019

Yes, these are available for both sides. In my previous response, I placed the operator numbers for both sides. Take a look at all the part numbers mentioned and see what you think. 
Casement Window Operator, 13-1/2" Arm
Casement Window Operator, 13-1/2" Arm
39-013
$20.70
Casement Window Operator, 13-1/2" Arm
Casement Window Operator, 13-1/2" Arm
39-014
$20.70
Ellipse Style Single Arm Operator, 9-1/2"
Ellipse Style Single Arm Operator, 9-1/2"
39-027E
$20.70
Ellipse Style Single Arm Operator, 9-1/2"
Ellipse Style Single Arm Operator, 9-1/2"
39-028E
$20.70
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