Correct operator model for awning windows

A home owner from Somers Point, NJ says:

July 26, 2016

Looking for a RH awning window operator (at least I think these are called awning windows). My broken operator looks very much like 39-378 (though it also looks a lot like many others). The dimensions are: Distance between top and bottom mounting holes: 5 1/4 (dim a) Distance between bottom two mounting holes: 1 1/8 (dim b) Distance between pivot holes on swing arm: 2 1/2 (dim c) I think I can deal with a slight difference in dim b by drilling a new hole in the aluminum frame and using a bolt instead of sheet metal screw. I don't know if the difference between the 2 1/2 vs 2 7/16 on the swing arm is a "killer" or not. Or, if there is a model that has my exact dimensions that I missed. Thanks.

User submitted photos of a window operator.

Dave Sr. from SWISCO responded:

August 1, 2016

I believe the the 39-012 operator looks like a better fit. These were sold quite commonly in the Somers Point area years back.

A home owner from Somers Point NJ says:

August 2, 2016

Thanks for the info, Dave. I notice that the 39-012 has an exact mounting hole dimension match, but the swing arm with the 3/8 hole is 2 11/16, vs the old one at 2 1/2. I don't know how important the length of that arm is - would the 3/16 excess length be an issue with these awning windows? In other words, is that better than the 39-378 witt the swing arm that is 1/16 shorter?

Dave Sr. from SWISCO responded:

August 4, 2016

I think you should be okay. Those link arms get a pretty decent amount of play, and I don't think 3/16" would be that noticeable of a difference after all is said and done.

RH Superior Window Crank

39-012

$20.45

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