Crank replacement

Hello! That number appears to be associated with quite few different parts. I'm afraid I won't be able to narrow down the list of replacements without seeing your original part. Would that be possible?

If so, please make sure to remove the operator from the window ahead of time so that I can see the full assembly without obstruction. I can then check our inventory for a match.

Thanks! At first glance, this appears to match our 39-221B. Look it over and see if you agree. Note that the cover and handle are sold separately under the 39-451.

detail of 39-221B