SWISCO - The Replacement Hardware Authority

Crank mechanisms needed, two types (right and left?)

A home owner from Arvada, Colorado says:
I have attached two pictures with measurements and cast-in numbers, I need two mechanisms with the "40471" number and one with the "L31538A" number. Please let me know if you need more information
User submitted photos of a window operator.
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Tom from SWISCO responded:
Good morning! Check out our 39-031 & 39-032 and see if either of these could work for you.
A home owner from Arvada CO says:
I just installed the crank mechanisms you suggested/sent and they work perfectly, thank you!!!
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Tom from SWISCO responded:
That's great news! Let me know if you have any other questions, I'd be happy to help.
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