Tilt Balance Replacement Parts

Thanks for writing in. This looks like a spiral balance. We can help you replace these, but it will be difficult to say exactly what you need without working with an undamaged version. We need the following information to be able to help. First, is this a tilt or non-tilt window? Second, we need the length of the outer tube, not included the tip, of the balance. We also need the diameter of that outer tube: this should either be 3/8" or 5/8". Finally, we need a picture of the bottom tip of the balance. From there, we'll try and make a recommendation for you. 

Thanks for your patience during this busy season. Let's go off the dimensions for the undamaged balance. If it's indeed 5/8" in diameter, than you need a Series 600 Tilt Window Spiral Balance. Now, it's difficult for me to say the length you need from one up-close photo of measuring tape. Are you starting from the base of the outer tube? If so, you measure up to to the round base of the tip. If this measurement ends in a X-1/2" increment, you round up to the next whole number. So if your balance is about 24-1/2" long, you round up to 25", and thus need the S600-25. Double check this measurement to be absolutely certain. 

Finally, you'll need to weigh your window sash. Match that exact weight with one of the weight ranges listed alongside each color tip option. Let us know if you have any other questions.