1990 era double hung windows

Question

I can really see any identifying marks but it appears the springs are contained within the plastic housing inserted into the window frame. I haven't taken the windows out yet but assume that if I do so I can pull out the plastic inserts with the springs inside. Or simply replace the entire plastic with springs once I cut the bottom to conform to the slanted shash.
The only part that had anything printed was the glass that had H-P printed on it. The double hung windows are dual glass with interior sealed grids.
Hope you can help.
Thanks

Casey · Accepted Answer

Hello,

It looks like you'll need replacement jamb liners. Unfortunately, we do not carry these balance systems but a local millwork can normally provide these replacement parts for older wood windows. Thanks for posting and good luck with your repair!