Window balance and parts

Quick Learner from Fernandina Beach Florida
Mar 1, 2020 7:36 am
The metal balance is 30 inches in length and 1/2 inch to 9/16 inches in width. The white plastic piece is 1 3/8 inches in width and 2 inches in length on either side and 2 1/4 inches in the middle. The metal piece that attaches to the window is 2 inches in length with 2 screw holes 5/8 of inch and 1 3/8 from the pointed end. The other end of the metal piece that attaches to the window seems to be bent but don't know if it should be straight or not. Hopefully you have enough information along with the pictures to help me identify the balance and components. Thanks
image image image image image
5 user uploaded images
5 Replies
Bob from SWISCO
Mar 3, 2020 10:38 am

Thanks for posting. This looks like a 30" Series 770 Channel Balance. The standard version of these balances attach to the top of the window track via a screw. However, it appears you have a rivet in the top hole. Did this balance attach to the window track via an S-Clip like our 19-029 or 19-030? If so, we can custom-build balances with rivets in the top hole so you can use S-Clips. 

Can you just tell us how many balances you need? Can you also show us a picture of any stamp code on the metal channel? If there is none, you will need to give us the exact weight of the window sash. 

For a new pivot shoe, see our 15-135. Go over the dimensions, particularly the width and thickness of the shoe, to confirm it matches. I am less certain about your pivot bar; based on experience, I don't think that 'offset' is particularly relevant; but I want to check with one of my senior colleagues to confirm the right replacement. We'll get back to you as soon as we can with more information. 

Quick Learner from Fernandina Beach Florida
Mar 3, 2020 4:44 pm
The balance was held in with what looks like the S clip so it's still in the window but it looks like the small one. I took another picture of the stamp code as well was the top of the channel.
8D25E516-FD47-42AE-A8E1-A8A7430F7328 173D9174-47AF-483F-B4E2-E3F45CD53171
2 user uploaded images
Tom from SWISCO
Mar 4, 2020 1:10 pm

Bob's out sick today, but I should be able to help you.

So, we can definitely supply this balance, but it will have to be a custom order like Bob mentioned. We'll basically be using our S770-30 but we'll remove the screw plug at the top and install a rivet in its place. You can reuse your old S clip.

We just need to know how many balances you need. Once I know that, I'll email you an order link and price quote for that quantity.

As for the pivot bar, it's not made anymore but I believe either our 26-360 or 26-306 will work. They'll both be compatible with your 15-135 pivot shoe. I know that neither has an offset as dramatic as yours but that doesn't matter as much as you'd think. They'll still work fine.

I'll await your quantity.

Quick Learner from Fernandina Beach Florida
Mar 4, 2020 2:09 pm
I just need 2 balances.
Tom from SWISCO
Mar 5, 2020 9:14 am

Great, thanks! I'll shoot that over right now. Let me know if you had any questions.

Products and resources found in this discussion
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
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
Need help identifying your part?
Send a photo or description to our Parts Experts!
Identify Your Part
SWISCO Part Experts