Window balance replacement

A home owner from San Diego says:
looking to replace a non-tilt window 1/2 inch balance (aluminum channel measures 34 inches even though it has 33 4BSI stamped on it) but trying to identify the correct end attachments (shoe and top) from the pictures it looks to be a series 380. I have two questions

1. Are there any identifying part numbers on the top and shoe to identify them?

2. Do I need the 33 or 34 inch balancer?

Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Our series are the most common pairs of the top & bottom balance guides. You can order balances and pick out the top and bottom guides to meet your needs. We do need the identification # printed on the metal channel and the length of the metal channel.
Profile picture of Donna
Donna from SWISCO responded:
Please send detailed photos of the the balance top and shoe, we would be happy to identify the needed balance replacement series for you.

If the balance measures 34", choose the 34" length.
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