need to know which is my part

A home owner from NJ says:
Hello,I want to order my window operator , but i am not sure which one I have to choose. in my window operator says four numbers: (two on the front and two on the back). On the front says:

1361486 L
1361483 HCR

On the back:

1361485 R
1361482 HCR

Also, I do not know which is window operator right and left handed. My window hinges if looking from inside of the home is on the right. the window open from left to right(looking from inside). please, let me know as soon as possible,
User submitted a photo of a window operator.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting! please see our 39-331 Andersen E-Z Straight Arm Operator and compare it to your own hardware.
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