Balance Springs needed
A home owner from Palm Coast, Fl says:
November 16, 2014
The window is a Nuair. The marking on side is 29 9 JW CMC 11. Length on channel in 30" long. The bottom shoe is 1 3/32 wide. Top shoe is .5 wide. Channel is 9/16 deep. The Sash weights 35 pounds.
Paul from SWISCO responded:
November 18, 2014
Thanks for posting, Scott. Start out by looking at our S385-30 channel balance. Just make sure the nylon attachments that come with it match your originals! As for the option, I recommend 2965 based on the weight of your sash.