Series 150 Spiral Balance?

There are two possible options on a replacement spiral balance for you. You could either go with our Series 600 or Series 900 depending on the tube diameter of your balance. The best way to go about doing that would be to get accurate measurements from a spiral balance that does not have any damage. Once you have done that, next you need to weigh your window sash in order to determine which colored tip bearing you would go with.