Window Operator 1 of 2

A quick learner says:
September 20, 2022
Attached are pictures and dimensions of a window crank operator that I believe is or close to the 39 - 084, but there are some slight differences.

The 2 holes at the bottom measure a center to center spacing of 1-3/16" whereas the dimension you show is 1-1/8".

The arm extension has a clearance hole slightly less than 3/8", whereas the 39-084 has a 10-24 thread bushing.

Please let me know what the proper part number is for this window crank operator I am showing here.
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Tom from SWISCO responded:
September 23, 2022

Hello! I think the 39-084 has too many differences to work as a replacement. Looking through our inventory, I think our 39-277 and 39-278 might be better. They're still a little different compared to your specs but I think overall it's a closer fit. Look it over and see what you think.

Dimensions for 39-277
Dimensions for 39-277
Crown Window Crank, RH
Crown Window Crank, RH
39-084
$20.45
LH Awning Operator, Nu-Aire
LH Awning Operator, Nu-Aire
39-277
$19.70
RH Awning Operator, Nu-Aire
RH Awning Operator, Nu-Aire
39-278
$19.70
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