Are my balances Series 770?

A home owner from Tilt Window Balances says:
March 27, 2012
Hey There,

I am working on replacing my balances in my tilt in vinyl windows. They are approx 13 years old. I have identified that it matches almost identically to: 24inch Series 770 balance. When I look at the number stamped into it it says: 2400 BSI LG. Will the 770 work? From the pic it looks identical.

Thanks!
User submitted pictures of white channel balances 2400 BSI LG.
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Paul from SWISCO responded:
April 4, 2012
Thank you for posting! It appears that this type of channel balance will have to be custom made for you. Please take a look at this Custom Channel Balance Order Form that I have started for you and fill out the rest of the information. One of our representatives will be in contact with you shortly thereafter.
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