Barrier enterprise windows

A quick learner from USA says:
The two pictures are of the balance bars taken out of my window. With the white piece attached at the end the unit is 28 1/4 inches. Without the white piece the rod measures 27 1/4 inches. I have three windows that I am not able to use because these have just broken. Any help you can give me will be appreciated. Thank you.
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
This looks like our Series 850 balance. Check it out and tell me if you agree.
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