Roto single arm operator

A home owner from Seattle says:
March 3, 2023
I purchased a roto single arm operator (part 39-429) to replace the old arm that is worn out. It appears I got the wrong part as it's slightly smaller than the existing one (the one with the tape measure on it in the photo) and also doesn't have the little ball on the end of the arm. Could you please help me identify the right replacement part?
Thumbnail of the uploaded file named 0CE7DC8B-A8BF-41DB-8BA8-9FB2E1DE09CD.jpeg
Thumbnail of the uploaded file named 1189529B-5E5C-4A6B-BCB4-B71B59B3824A.jpeg
Profile picture of Casey
Casey from SWISCO responded:
March 3, 2023

Unfortunately, this Roto straight-arm operator has been discontinued and no substitute has been found. You can find our return policy here if you would like to send it back for a refund. 

I'm sorry that we won't be able to assist with this repair but please let us know if you have any other hardware questions. 
Roto Single Arm Operator, 9-1/2"
Roto Single Arm Operator, 9-1/2"
39-429
$28.90
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 >
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 3-4 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 (888) 991-1929 or at help@swisco.com.