Window channel balance

A contractor from Winter garden, FL says:
1/2" x 13"

101
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Bob from SWISCO responded:

Thanks for posting. I'm not certain about this balance's identity, but I'm forwarding this discussion to one of my senior colleagues, and we'll get back to you as soon as we can with more information. Can you just confirm the stamp code on the metal channel? Many thanks. 

A contractor from Winter garden, FL says:
Stamp code is 101
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Bob from SWISCO responded:

Thanks for bearing with me. This is a very old Pan Am Window Balance. I believe I know what you need, but I'm verifying one detail with a senior colleague to be absolutely certain. I will get back to you as soon as possible. Apologies for the wait, and thanks for your patience. 

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Bob from SWISCO responded:

Thanks for your patience. I just sent you an email with a custom link enclosed to order (2) 13" channel balances, with the 15-007 Bottom and 19-035 Top Fittings attached. This balance will have a stamp code of 1210, which is for a sash that weighs 3 through 6 pounds. Let me know if this all seems good to you, or if you have any other questions prior to placing your order. Many thanks. 

A contractor from Winter garden, FL says:
Thank You so Much!
Classifying Channel Balance Fittings
Classifying Channel Balance Fittings
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