Window sashes

Question

I'm replacing the window sash balancers in my homes old wooden slide up and down Windows. What measurements or info on the Windows do I need to go by. I have attached photos with this email.  Thank you..

Paul · Accepted Answer

You have very old windows with a discontinued balance system. I don't think you're going to find anything for it on the market today. Your best bet is to contact your nearest mill work and have them set you up with a new set of jamb liners.