Channel balance pulley Rod replacement on a Cardinal IG window stamp

A quick learner from Menomonie WI says:
The window frame has order sticker: 21111-06 7120DH. 09/03/02 UBC Menomonie Cust:

The metal sleeve containing pulley system is 20" with a stamp 20E
A quick learner from Menomonie WI says:
balance channel20" length 9/16 wide 9/16 deep pulleys
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Emily from SWISCO responded:

Hello there!

Your balance appears to match our Series 770 channel balance with a stamp option of 20E. If you have any questions just let us know! 

A quick learner from Menomonie WI says:
Thank you ??I will order 2
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