Windows will not stay open

A home owner from Houston, TX says:
I believe I am missing the bracket that the spiral balance locks into under the sash. They are non tilting metal windows. The spiral balance matches closely to the 5/8 in 500 series with the small butterfly clip at the bottom. i tried to capture the underside where I think the bracket should go.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Are you able to remove the sash? If not, see if you can fit our 17-012 bracket underneath it. You may be able to get this to work.
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