Semco Casement Operator

A quick learner from Sleepy Hollow il says:
How do I identify the part number and how do I measure it. It is a Semco casement window.
Thumbnail of the uploaded file named IMG_0106 (002).jpg
Profile picture of Bob
Bob from SWISCO responded:

This looks like possibly the 39-031 and 39-032, which I believe we've seen Semco windows use in the past; but to be safe, I'd consider the 39-155 and 39-156 as well. The only difference between these two sets of operators is the length of the link arm, so carefully compare to see what matches best. 

A quick learner from Sleepy Hollow il says:
What do I measure how do I compare
Profile picture of Bob
Bob from SWISCO responded:

The difference between these two sets of casement operators lies in the length of the link arm. The pictures illustrating these differences are on the shop pages; but for your assistance I have enclosed the pictures below.

For the 39-031 and 39-032, the length of the link arm is 4-7/16" in length. The 39-031 is pictured below.

Dimensions for 39-031
For the 39-155 and 39-156, the link arm is 3-13/16" long. The 39-155 is shown below.
Dimensions for 39-155
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at 856-317-6263 or at help@swisco.com.