custom channel balance?

A quick learner from USA says:
My balance markings are 2200 BSI. The balance metal is 23" long.
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting. We can definitely help you replace this balance, though it will need to be custom made, as you suspected. Before we begin, can you confirm the weight of the sash these balances support? Can you also tell me how many you need?
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