confused what part to order

A quick learner says:
Entry Guard truth on big arm and 3084IL on smaller arm. you mentioned part number 39-035 on another thread however that part has just one arm?
Thumbnail of the uploaded file named Arm
Thumbnail of the uploaded file named Cover Base
Thumbnail of the uploaded file named Operator
Profile picture of Lauren
Lauren from SWISCO responded:

Hello, thank you for posting,

Please start by reviewing the style of the 39-031 and 39-032 or the 39-155 and 39-156 operators. Compare the dimensions to confirm the best fit. The main difference between the two is the length of the short link arm.

Also see the 39-107 cover and 39-114L handle. Let us know what you think and if you have any additional questions. 

Watch How To Repair A Casement Window Crank Operator
Watch How To Repair A Casement Window Crank Operator
VIDEO
WATCH >
Connecting a casement window operator to stud bracket
Connecting a casement window operator to stud bracket
VIDEO
WATCH >
How to Orient a Dual-Arm Operator
How to Orient a Dual-Arm Operator
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 >
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.