4 balances needed for 2 non-tilt windows

A quick learner from Boston says:
Hi, I'm looking for these window balances for 2 windows. Thank you
Thumbnail of the uploaded file named 15B806F3-01D5-4373-8964-3092B3EBF46E.jpeg
Thumbnail of the uploaded file named 9E8F37CB-5DDE-48AC-A948-A203890A9C3D.jpeg
Thumbnail of the uploaded file named 548CE536-6FB7-4495-BF33-63CC55E5BA8B.jpeg
Thumbnail of the uploaded file named 420DC2D9-23EE-4204-8DBE-7FE026F2F6D3.jpeg
Profile picture of Emily
Emily from SWISCO responded:

Hi there!

Thank you for your patience during our busy season. It looks like you have either our S351-22 , with a 15-002 bottom attachment, or S390-22 , with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. 

The stamp on your metal channel is a bit odd. We don't have a stamp option of "2116" for these balances. We recommend weighing your sash on a scale to determine the appropriate stamp option. There's a chart on the S351 's and S390 's store pages that will tell you which option you'll need based on the weight of your sash. 

If you have any questions just let me know! 

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.
How to Identify Replacement Channel Balances
How to Identify Replacement Channel Balances
VIDEO
WATCH >
How to Replace a Non-Tilt Channel Balance
How to Replace a Non-Tilt Channel Balance
VIDEO
WATCH >
How to Repair a Jammed Window
How to Repair a Jammed Window
VIDEO
WATCH >
How to replace a channel balance
How to replace a channel balance
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 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 (888) 991-1929 or at help@swisco.com.