Ellison Window Balancers

Home Owner from AL

Nov 10, 2025 5:15 pm

I have a house full of Ellison Windows that are 20 years old. I'm getting numerous glass sash glass replaced and 2 of them have shot balance mechanisms. Attached are some pics. One is a set of 36" and the other is 30"; pics attached.
There are no markings on the parts.

5 user uploaded images

4 Replies

Emily from SWISCO

Nov 14, 2025 10:04 am

Hi there!

This looks like a match for our Series 770 channel balance. However, your balance uses an S-clip to mount to the top of the window, while our S770 is designed to use a screw. We can still help, but this must be a custom order due to that difference.

Can you confirm the stamp printed on the back of the channel for each balance? How many of each are you looking to purchase?

Home Owner from AL

Nov 17, 2025 9:34 am

Emily, Awesome! So you can modify to allow the S clip hanger? These drop the balance mechanism down a couple of inches. I'm not sure the vinyl is strong enough to accept a screw.
Do you have the S clip hangers? I could use 2 please.
Also, I need a pair of each balance mechanism (2) 36", (2) 30"
Pics attached. I could barely read the stamp and one did not even have it. 30" is 9B; 36" is 35C. Is there anything else you think I might need?
Thanks,
Rick

2 user uploaded images

Emily from SWISCO

Nov 18, 2025 2:23 pm

Yes, we can supply the Series 770 with a rivet in the top hole, allowing it to use an S-clip. Note that you'll need the 19-029 short S-clip, which is sold separately.

We will use the 36C stamp for the 36" balance, designed for sashes weighing between 22 and 27 pounds. For the 30" balance, we’ll use the 30B stamp, designed for sashes that weigh between 13 and 19 pounds. Before placing the order, we recommend weighing your window sashes to confirm they fall within these specified ranges, as custom orders are nonrefundable.

Please let us know if you have any questions.