20" window balast

A quick learner from Menifee CA says:
on one end is printed 2030 BSI
User submitted a photo of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
We should be able to help, though this balance will have to be custom made. Before we begin, can you show me a picture of the top nylon attachment? Can you also tell me how many you need?
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