Marva window cranks

A home owner from usa says:
Hello! Please quote 20 rigth and 20 left window crank operators replacements for the Marva windows. Attached there are two pictures of the windows cranck operators I have installed at home.
User submitted photos of a window operator.
Profile picture of Paul
Paul from SWISCO responded:
Hey, Evelinda. See our 39-410 and 39-411 and let me know if either of these are a match. You need to compare our dimensions to your own before you decide on anything, though, just in case.
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