the number on the balance is 284 HL CALDWELL and the metal is 29 inches long
and they are 1/2 inch, also I think that the top is part # 18-009 black
Bill
A home owner from El Centro CA says:
October 5, 2016
on monday I sent you some pictures of my parts. Have not heard back I think that I have figured out the parts I need but because my sash weights real close to the next step up would it still work if I got the stronger spring. Bill
Paul from SWISCO responded:
October 7, 2016
Thanks for posting, Bill. From your photos, I believe our S395-29 channel load with a spring strength option or 2840 will replace this. For the black top sash guide, see our 18-009 for a possible match. Let me know what you think!