window balance

A quick learner from Pembroke Pines, Florida says:
I need to replace two window balances. They are 28 1/2 inches long, 1/2 inches wide and the only marking I see is 28405. The parts resemble your model 351 window balance. The only difference I see is the length (28 inches vs. 28 and 1/2 inches).
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Tom from SWISCO responded:

We can supply this balance for you, but it will have to be a custom order due to that length. What I'll do now is email you a purchase link and price quote for two balances. You can use that to place an order on our site.

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