Window Balance

A quick learner from Chelsea, Manhattan says:
September 12, 2023
Twice a year I clean the outside of my windows for the last 15 years. The bottom window is removed so I can pull down larger window to clean the top outside of it. This year on balance came lose and fell behind my building. I tried looking for a serial number on the part but the only number visible is 1420.
Thumbnail of the uploaded file named IMG_20230912_163142461.jpg
Thumbnail of the uploaded file named IMG_20230912_163150764.jpg
Thumbnail of the uploaded file named IMG_20230912_163220763.jpg
Thumbnail of the uploaded file named IMG_20230912_163238257.jpg
Profile picture of Lauren
Lauren from SWISCO responded:
September 13, 2023

Hello, thank you for posting,

It appears you have either our Series 351, with a 15-002 bottom attachment, or Series 390, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need.

If the balance is stamped with 1420, the length of the metal channel excluding the attachments should measure 15" long, please compare. You would need a 15" balance with a 1420 stamp option that can support a 6 to 10 lb window sash.

Please review and let me know if you have any additional questions. 

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.
15" Series 351 Channel Balance
15" Series 351 Channel Balance
S351-15
$9.34
15" Series 390 Channel Balance
15" Series 390 Channel Balance
S390-15
$9.34
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.