Identifying balances and shoes for replacement

Quick Learner from Boston
Hello,
I am looking for help identifying and purchasing the right parts for repairing my windows. I had the lower hung window balances and some shoes replaced by a company and I would like to do the top hung portion myself as well as replace the shoes that the company missed during their service. The new balances are marked 28-7 EQ5 CMC 90 and the old balances which I am looking to replace are marked with 24 AV CMC 6. Please let me know if you need any additional information. Any help is appreciated! Thank you!
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Emily
Emily from SWISCO
SWISCO
Expert

Hello there!

Thank you for reaching out to us. We're happy to look into this. To help us get started, can you remove the original 24 9 stamped balances? We would like to see photos of the fittings at both ends of the channel along with any other attachments it uses. Can you also confirm if the top and bottom sashes are the same size or not? 

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