window lift code

A home owner from Florida says:
my 29x1/2 window lift has code UB-28D looks like 29 series 385 channel balance
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Tom from SWISCO responded:
I'm afraid we cannot confirm what balance you have based on this information. If you say it looks like our Series 385 channel balance, then I would go with our S385-29. You can weigh your sash to confirm the correct stamp option, as well.
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