Left and right crank mechanism

A handy person from Massachusetts says:
October 15, 2020
We have a left and right entry gard truth crank mechanisms. Part no. 4.840.075. There's also another number near the gear, 31782L. If you flip the mechanism there are two additional numbers on the back of the pivot arm; 31368 and well as 20810.
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Casey from SWISCO responded:
October 15, 2020

Hello, thanks for posting! Take a look at our 39-035 and 39-036. Compare their dimensions to yours to be sure its a match!
A handy person from Massachusetts says:
October 15, 2020
Thats an exact match!! And upon reviewing the additional accessories we would also need 39-560 & 39-561.
Truth Hardware Entrygard Dyad Window Operator
Truth Hardware Entrygard Dyad Window Operator
39-035
$32.30
Truth Hardware Entrygard Dyad Window Operator
Truth Hardware Entrygard Dyad Window Operator
39-036
$32.30
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