A home owner from Arizona says:
I need one of these
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Casey from SWISCO responded:


It looks like you have either our S351-28, with a 15-002 bottom attachment, or S390-28, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a 2730 spring strength option for your replacement balances. Thank you!

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