2 sets of balances

A quick learner from Yorktown, Virginia says:
I have 2 sets of channel balances that I need to replace.

One is a 16" without the attachments and 153000H stamped on the metal. It looks like it had 2 wings on the bottom shoe but one is broken off.

The second is a 28" without the attachments and 274000H stamped on the metal. It does not look like it has the wings on the shoe.
Thumbnail of the uploaded file named IMG_2944.JPG
Thumbnail of the uploaded file named IMG_2945.JPG
Thumbnail of the uploaded file named IMG_2947.JPG
Thumbnail of the uploaded file named IMG_2949.JPG
Thumbnail of the uploaded file named IMG_2950.JPG
Profile picture of Casey
Casey from SWISCO responded:

Hello,

The balance assembly shown in your photos resembles the S350-16. Your stamp code indicates that you would need 1530 strength options for your replacements. Review the specifications to confirm that they match up to yours. 

Close up view of the S350 balance top.
Close up view of the S350 balance top.

Close up view of the S350 balance shoe.
Close up view of the S350 balance shoe.

If you believe that the longer balance is undamaged and does not have wings on the top or bottom, see the S351-28 or S390-28. Take a look at the image below to determine which balance you'll need. You'll also need 27400 spring strength options for your replacement balances. Thank you! Thank you! 

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.

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 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
GUIDE
READ >
Choosing a Non-tilt Channel Balance: What Will We Need?
Choosing a Non-tilt Channel Balance: What Will We Need?
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.