Replacement 33" channel balances

A home owner from centreville virginia says:
I need to replace some balances on my vinyl windows that are 16 years old.I've tried to match up the shoes and also the id numbers but there are no identical matches.I do know that the channels are 33 inches and the only stamped numbers on my balance are 32 and then a 3 after that ,it also says dp caldwell who may be the manufacture of this balance.

Do the shoes have to be identical matches or just very close to the originals.Im hoping you can help. Thanks ...Joe Samuelson
A customer submitted photo of channel balance attachments.
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Tom from SWISCO responded:
Thanks for posting! Before we can offer any suggestions, we just need a little more information regarding your bottom attachment.

Please refer to the following chart and identify the part that most closely resembles your shoe.
A SWISCO guide to identifying balance shoes.
A home owner from centreville says:
Yes it does have wings and the part measures one inch across so I suspect its the 15-005.I hope this helps thanks
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Donna from SWISCO responded:
Hi Joe,
Looks like Series 380 replacement channel balances are needed. SWISCO product code is S380-33 and for the 32 3 markings choose stamp option 3230.
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