Operator Replacement

A home owner from Northern California says:
March 13, 2021
Hi there. So my window operator crank connector broke off. I believe I need to replace the whole operator. Can you please advise me which replacement operator should I select? I've included a picture of the broken operator, and given that I can't open the window, a picture of the window next to it to show the kind of operator I need to order. Thank you.
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Bob from SWISCO responded:
March 15, 2021

Hello. This looks like either our 39-253LB or 39-438B. The difference between these two operators is shown in the video below. 
Encore Dual Arm Operator, Sill Mount
Encore Dual Arm Operator, Sill Mount
39-253LB
$30.70
Encore Dual Arm Operator, Sill Mount, Low Profile
Encore Dual Arm Operator, Sill Mount, Low Profile
39-438B
$38.64
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 >
How to identify casement and awning operators
How to identify casement and awning operators
GUIDE
READ >
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