5/8 x 25" Spiral Balance with bottom angle adapter

A home owner from Connecticut says:
My current window uses an integrated bottom angle bracket to attach to a 5/8" x 25" Spiral Window Balance. When I called, it seems that the similar non-integrated bottom window brackets are out-of-stock.

Will I need to switch to a side attached bracket, and if so should I go with a shorter spiral bracket (e.g., 24? or 23")?
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Emily from SWISCO responded:

Hi there!

Take a look at our Series 500 spiral balance, along with the 17-033 bracket. Look these items over and see if they could be what you need. 

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