Window Balance Broke
Thanks for contacting SWISCO. This is a balance shoe like the kind that attaches to our Series 795 Channel Balances. If you are unable to keep your windows open then you need to replace your channel balances entirely. We can help you find the right replacement balances. Please remove the channel balances from the window and measure the length of the metal channel (but excluding any end attachments). Also, please look for any stamped codes on the metal channel. This will be helpful in identifying what you need. Thanks.
I'm afraid you can't, as your old shoe has a particular configuration--the deep groove down the front of the stem--that our replacement shoes lack. This means our t-shoes would be incompatible with your current balances. But additionally, I'm afraid that if you cannot open and close your windows properly, then your balances are likely broken, and the best thing to do would be to replace them.