28D USB

A home owner from 34114 says:
Looking for replacement window balances, channel with spring marked 28D USB,
clip at end has wings, 29" long
Channel Balance
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Paul from SWISCO responded:
I noticed you are presently located in Florida. Usually, the S380-29 channel balance with a 19-005 top and 15-005 bottom balance shoes are used in the windows. Take a look to see if this is what you have. If so, you would choose the 2840 option to accommodate your stamping of "28D". Be sure to get back to us and let us know how you made out.
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