Caradco Double Hung Window Replacement Parts

Unfortunately, we are not able to replace this kind of spring. The issue is that it's built into the jamb liner, which itself is made for that specific window. They are very, very difficult for us to supply due to their specificity. Your best bet is to contact the original suppliers of the window; if this is a wood window, you could contact a local mill work.

I'm sorry that we cannot be of more help.