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S770-36 36" Series 770 Balance

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.

Window balances are non-ribbed u-channel 36 inches long with the number 35e stamped in them. I need to remove the entire side plastic insert after removing both windows to install or remove balances.

I'm seeking a channel balance as seen in the attached images.

Balance is 36" looks like the S751 but the metal channel is plain instead of ribbed?

I need a replacement channel balance for a 20 year old Atrium Thermal Windows 36 inch channel. The model 770 SWISCO with a 9/16 inch channel looks exactly like the one I need---- except for how it hinges on top. The SWISCO has a plastic screw in latch at the top but my Atrium Thermal Window has a ... (cont.)

We've been contracted to repair several broken sash spring mechanisims in varying size windows. Please provide a direct email for correspondence.

I need a replacement on my 36 inch sash balance please. I need two. Thank you!

Looking for a 36C product code S770-36. The one I'm replacing attaches at the top with a little bar, the one in your catalog uses a screw. Would I just remove the hanger now in place and use a screw for this one? Thanks for your help.

Measures 1/2"x 36" and has "C3550" etched in metal as shown in pictures.Thanks, Dalton

Hello, I had a window balance spring that broke and I'm trying to find the correct part. I've included as much photos as I can. If you're able to help it would be amazing. Thank you

I need two balances for a tilting sash window. The old balance is 36" long, U-shaped and the window weighs 24.6 lbs. The old balances have the code C3530 stamped. Do you think you can help me? Thanks, James

Looking to replace these balancers, will need a quantity of 2. Channel length is 36", color is a tan/beige. Please let me know if you need additional information.

I have a 36" window balance that I need replacement's for. It has c3550 marked on it.

We have 2 broken tilt locks on opposite sides of windows and 1 broken balancer. Window manufacturer is unknown since there are no names stamped on them. The window is a vinyl single hung window.Any help would be appreciated.Thank you.Leroy

I have a set of windows that need new window balances which I believe are the 770 series. The stamping on the part is 34G (see photo). The length of the balance is 34in and the spring length is approx 19.5in. What would be the replacement part? Also, this is a double hung window (one opens from ... (cont.)

The sash about 40 pounds

Hello! I was looking for a Series 770 window spring but in the 36G size (I have a very heavy window). In looking at some posts on your website it seems like those would be a special order. I need 2 but would likely order some more as extras. It would be great if somebody could contact me if that siz ... (cont.)

I need to replace Channel Balances for tilt windows similar to your Series 770 (plain channel with spring on top, block & tackle pulley on bottom with 15-043 Terminal Clip which attaches to 15-129 Pivot Lock Shoe.) Mine are 36F for heavy 39 lb. sash. Your 36 goes to D weight. What are my options? ... (cont.)

Attached are photos of the channel balance used in my tilt window. Note the marking is 3520 BSI VN. My balances come with hooks attached to the cord. The balance length is 36", width is 9/16" and the depth is 5/8". I believe that the correct Swisco replacement part is S770-36 Option B. Is this corre ... (cont.)

I have a large Trimline double-hung window with a broken spring balance. Some of the parts are potmetal castings that have broken. There is a big spring and a double-sheave pulley. Can you supply a replacement and installation advice? I'm a fairly handy homeowner. Thanks!