Channel Balance Help

A handy person from Parker, Colorado says:
Hi, I have a broken pulley on a window balance and I need a replacement part. I went through and did the measurements and its 27" long, 5/8" deep, and 9/16" wide. I'm just not sure about the top and bottom pieces. I attached pictures of the balance,but let me know if you need more info.

User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Hey, Matt, thanks for posting. Take a look at our S385-27 with a 2650 option, I think this may be what you want.
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