tilt window

Thanks for posting. Assuming that you have a tilt window and that the tube is 3/8" in diameter, then the Series 900 is what you need. The 15-015 and the S900-24 are compatible but I can't confirm that this is the shoe you have. You need to compare it to your original to confirm.

Different tip colors indicate different strength ratings. In other words, they tell you how much weight your balances can support as a pair. We have a chart on the S900-24 store page that you can use as a reference.