Casement operator

A quick learner from USA says:
I ordered this:

Maxim Dyad Sill Mount Operator, RH 39-221

Unfortunately, this doesn't look like it is going to work. There looks to be a couple of issues:



It's right handed, not left
It has one extender bar not two (see photo)
It's brown, if white is available that would match my window
The gear teeth appear to be plastic, are there some that are made with metal?


It did seems to fit otherwise, the wholes matched up and the latch fit in the window opening.



I attached a few pictures.



Thank you for your advice to order the correct part.
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Casey from SWISCO responded:

Hello,

Your original operator resembles the 39-253LB and 39-253RB Encore operators, which use the 39-529 track slider. Take a look and if the specifications match up to your original assembly, you can also use the 39-375 and 39-376 handle and cover kits. Thanks for posting! 

A quick learner from USA says:
Thank you - these look promising, I will check them out more carefully when I return home.
How to Orient a Dual-Arm Operator
How to Orient a Dual-Arm Operator
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Comparing the 39-253LB & 39-438B Operators
Comparing the 39-253LB & 39-438B Operators
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Anatomy of a casement window
Anatomy of a casement window
VIDEO
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