Help with window balance

Question

Greetings,
My window has a metal bar on each side. I think it is called the balance; I am not sure. Can you please help me determine the correct replacement parts that I need? The metal bar attaches at the top of the window with a screw, and a rope passes through the frame and attaches to the bottom of the sliding glass.
There are two bars, one on each side of the window.

The metal bar has numbers stamped on it UB 22E.
It is 23 inches long and looks to be 9/16 inches wide.
It appears to be some plastic round things and some sort of metal clip that fell out
I also took a picture of the part that attaches to the bottom of the sliding glass.

Please let me know if additional explanations or information is needed.
I have attached pictures to help describe what I am looking at.
Thank You,

Lauren · Accepted Answer

Hello, thank you for posting,

Please review the S770-23 channel balance as a replacement. The 22E stamp does not directly translate to our spring strength stamp options. To choose the correct option, you will need to weigh the window sash and compare to the strength chart on the page.

I do not recognize the metal clip shown in the 3rd picture. Do you have any that are still installed that we can see the placement? Thank you!