Please help Upgrading crank handles

A home owner from North dakota says:
We have a weather shield casement bay window. The two smaller outside windows have weather shield crank handles which are non-folding. The operator hardware is a split folding operator part number truth 31850. We have a left and right hand operator for each their respective windows. I would like to upgrade to a white folding crank handle or nested folding handle. Which product would work? Any help would be fantastic.
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Casey from SWISCO responded:

Hello,

Your operator resembles the 39-315 and 39-316 assemblies, which are compatible with the 39-205 folding handle. Take a look and let us know if you have any other questions. Thanks for posting! 

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