Need replacement crank mechanisms for both left and right casement windows

A home owner from Norwalk CT says:
February 12, 2024
My window has the below makings on the label. I have found on your website Sash Dyad Crank 39-187 and 39-188
Can you tell me if these are the correct replacements?

NAMI
NFRC 100
code- HII-280-1
spec-NFRC
series-CLCASE
mst- 280-M-006,7, 14,15
Cortilird HII-280
0.47-97
Thumbnail of the uploaded file named WINDOW1.jpg
Thumbnail of the uploaded file named WINDOW2.jpg
Thumbnail of the uploaded file named WINDOW3.jpg
Thumbnail of the uploaded file named WINDOW4.jpg
Thumbnail of the uploaded file named WINDOW5.jpg
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
February 13, 2024

Hello, 

I do believe the 39-187 and 39-188 operators with the Zig Zag gear arm are the operators you are looking for. As long as the dimensions match up, these should be a good fit for your window. Take a look at the operators along with the related parts and videos on the website.

If you also need a new tie bar guide, start by reviewing the 39-448 style. 

Let us know if you have any additional questions. 
Sash Dyad Crank, 5"
Sash Dyad Crank, 5"
39-187
$37.10
Sash Dyad Crank, 5"
Sash Dyad Crank, 5"
39-188
$37.10
Tie Bar Guide
Tie Bar Guide
39-448
$0.90
Crank Handle, 11/32"
Crank Handle, 11/32"
39-114L
$4.42
Truth Folding Crank Handle, 11/32"
Truth Folding Crank Handle, 11/32"
39-205
$11.70
8-32 x 5/8" Phillips Pan SS Screw
8-32 x 5/8" Phillips Pan SS Screw
33-083
$0.31
Connecting a casement window operator to stud bracket
Connecting a casement window operator to stud bracket
VIDEO
WATCH >
Anatomy of a casement window
Anatomy of a casement window
VIDEO
WATCH >
SWISCO 39-417 Tie Bar Guide
SWISCO 39-417 Tie Bar Guide
VIDEO
WATCH >
SWISCO Window Operator Crank Handles
SWISCO Window Operator Crank Handles
VIDEO
WATCH >
Watch How To Repair A Casement Window Crank Operator
Watch How To Repair A Casement Window Crank Operator
VIDEO
WATCH >
How to identify casement and awning operators
How to identify casement and awning operators
GUIDE
READ >
Replacing tie bar guides
Replacing tie bar guides
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.