Attached are 3 pictures of a part that broke in my window. Marked as a 3540 but I believe the window was too heavy for the 3540 as it weigh 33.2 lbs. could need a 3550? Pair
Also need 4 2950 both need top and bottom winged. Do the wings come installed?
The 2950 are 30" by a half inch channel.
The 3540 is 36" with a half inch channel.
Take a Lo ok at the 3 photo s of the 3540s let me know what you think?
Sheldon
Chanel balance

Quick Learner from Boynton Beach, FL
Nov 20, 2022 12:55 pm
3 user uploaded images
4 Replies

Casey from SWISCO
Nov 28, 2022 12:56 pm


Hello,
With this combination of attachments, you could have either an S380 or S385 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.
I also agree that you'll also need 3550 spring strength options for your 36" replacement balances to support a sash between 30 and 35 lbs.
If your 30" balances have worked well up until now, you'll need 2950 strength options. Thank you and let us know if you have any other questions or concerns.

Comparison of the S378, S380 and S385 balance shoes.

Quick Learner from Boynton Beach, FL
Nov 28, 2022 2:09 pm
Do the S-380 channel attachments come attached or do I need a special tool to put in the rivets?

Casey from SWISCO
Nov 28, 2022 2:24 pm


Our balances come with the end fittings shown in our product images already attached.
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