replace window balancer and part identification

A home owner from Jacksonville, Fl says:
February 15, 2012
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:
March 1, 2012
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.
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