Windows Channel Balances, 2730F & 2140F

A home owner from UT says:
I also need help with two windows Channel Balances. The stamp on the first one is 2730F, the 2nd one is 2140F. The attached shoes are the some. Please help me to find the series #s.

Both of the Channel Balances are 1/2" wide.

Thanks a lot!
User submitted photos of their channel balance attachments.
Profile picture of Paul
Paul from SWISCO responded:
Your balance fittings look like our 15-005 and 19-002. This combination of fittings is not an existing balance series. We can custom make this balance for you. Please fill out this form for each of the two sizes of balance replacements you need.
How to Replace a Channel Balance Attachment
How to Replace a Channel Balance Attachment
Classifying Channel Balance Fittings
Classifying Channel Balance Fittings
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