BSI 2640 window balance

A home owner from Colorado says:
Help with balances Marked 2640 BSI op
what replacement part do I use? I need a couple sets +, and is there a way to increase the weight strength a single step?
Thank you! -DAT
Thumbnail of the uploaded file named dt-2640-27-winged1.jpg
Thumbnail of the uploaded file named dt-2640-27-winged2.jpg
Thumbnail of the uploaded file named dt-2640-27-winged3.jpg
Thumbnail of the uploaded file named dt-2640-27-winged4.jpg
Profile picture of Emily
Emily from SWISCO responded:

Hi there!

With this combination of attachments, you could have either an S380-27 or S385-27 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. Choosing a stronger option would actually make the window harder to close, not easier to open. We suggest going with the 2640 stamp option, which is what your balances currently have. 

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.
A home owner from Colorado says:
Thank you so much, Ill order a couple sets! :)
A home owner from Colorado says:
PERFECT match, took a few minutes and saved 300 bucks over the quote - you guys are going in my favorites!!
Thank you!
Profile picture of Emily
Emily from SWISCO responded:

Thank you very much for your kind words! We're always happy to help. If you have any future hardware questions or repairs, you know where to find us! 

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.