Need to replace balances

Take a look at our S500-33 spiral balance.

While the tip color may flirt between red and orange, I can assure you they are one and the same.

To be 100% certain this is the part you need, the best thing for you to do will be to weigh your sash.

For these old aluminum non tilt windows, there's a good chance that you will not be able to remove the sash

You can still weigh it, but you will have to put the scale on the window sill, disconnect the balance, and gently lower the sash onto it.

If you have any further questions, please let me know.

Based on the pictures you have submitted, your balance is for a non-tilt window. 

Take a look at the balance I recommended, along with the associated parts, which include brackets that looks similar to what is shown in your pictures.

If you have any further questions, please let me know.