Channel Balance 2940 : SWISCO.com

Quick Learner

Oct 19, 2022 8:24 am

length 30 inches.
Stamp # 2940
Unknown window manufacturer
I need two window balances please.

5 user uploaded images

4 Replies

Casey from SWISCO

Oct 24, 2022 1:41 pm

Hello,

With this combination of attachments, you could have either an S380-30 or S385-30 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. You'll also need 2940 spring strength options for your replacement balances.

Thank you and let us know if you have any other questions or concerns.

Comparison of the S380 and S385 balance shoes.

Home Owner from Fort Myers, Florida

Oct 25, 2022 8:44 am

Good morning. The bottom portion of my channel balance measures 1 inch. The window is rather heavy so I would imagine it would require a stronger spring. Do you require the length of the spring to determine the strength for my replacement channel balance?

Thank you.

Casey from SWISCO

Oct 25, 2022 9:14 am

Based on your measurement and the 2940 stamp on your original balance, you would need the S380-30 channel balance with a 2940 strength option to support a window sash between 23 and 28 lbs. You are welcome to weigh your sash to confrim that it falls within the supported weight range if you're not sure that the original balances had the appropriate strength options.