replace window balancer and part identification

A home owner from Jacksonville, Fl says:
I need to buy 2 window balances and several top sash guides.

The Numbers printed on the window balance are : 28 4 LW CMC 7 . The length of the metal balance is 29 inches. The width is 5/8 (I think 9/16).

As for the top sash guides they look very very similar to Top Sash Kinko Guide 18-166.

I will probably order 2 balances and 10 top sash guides.

Thank you very much, Alex B
User submitted picture of 28 4 Channel Balance LW CMC 7.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting. Please take a look at our S385-29 channel balance with a 2840 stamp option.

As for the top sash guide, please make sure its measurements match our 18-166. If you aren't sure, please upload a picture of the top sash guide with dimensions, and we will see if we can match it for you.
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at 856-317-6263 or at