Window operator.

A quick learner from Port Angeles, WA says:
Need a window operator for a Milguard purchased in 2001. The gear is stripped. The only numbers I can find are 40987. Thanks
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Bob from SWISCO responded:

I believe this is either our 39-253LB or 39-439B. The difference between these two operators is shown in the video below.

How to Orient a Dual-Arm Operator
How to Orient a Dual-Arm Operator
VIDEO
WATCH >
Comparing the 39-253LB & 39-438B Operators
Comparing the 39-253LB & 39-438B Operators
VIDEO
WATCH >
Anatomy of a casement window
Anatomy of a casement window
VIDEO
WATCH >
How to identify casement and awning operators
How to identify casement and awning operators
GUIDE
READ >
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