channel balance

Handy Person from Porter Ranch CA

Sep 21, 2020 5:11 pm

trying to figure out what kind of channel balance i need to replace existing one. the current one is 0.5" wide and 30" long (the metal part without plastic components)
the picture of markings is attached.

1 user uploaded image

4 Replies

Casey from SWISCO

Sep 25, 2020 11:28 am

Hello,

We'd be happy to help but we'll need to see the attachments on either side of the metal channel. Your (29 9) stamp is also outdated, so I would recommend weighing the window sash so that we can determine the spring strength needed to support your window. Thank you!

Handy Person from Porter Ranch CA

Sep 28, 2020 10:48 pm

unfortunately i cannot weight the window. I have to remove window shutters to be able to remove the window.
Attached are pictures of the connectors on both ends.

2 user uploaded images

Casey from SWISCO

Sep 29, 2020 10:55 am

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.

Unfortunately, you'll need to weigh your sash to determine which option you'll need. There is a chart on the product page that explains how to choose your option based on the sash weight. There is no other reliable way to make sure your balances are calibrated correctly. If you choose the incorrect spring strength option, your windows won't operate properly and could cause damage.

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

Comparison of the S378, S380 and S385 balance shoes.