Hello! We can supply this balance, but only as a custom order due to its configuration. You have what's called an "extended travel" channel balance, named after the design of its block and tackle system.
Before we go any further, I just needed a few more pieces of information. To start, can you show me a clearer picture of the metal hook at the end of the cord? Can you also tell me how many you needed to buy? Finally, would you happen to know who made your window?
Sure, if that's all you need then it will definitely make this project a lot easier.
We don't sell an exact match for this top sash guide, but customers in the past have told me that our 18-009 has worked well as an alternative. This lacks the same bottom tabs as yours, but I don't think those are very important details. You can review the dimensions for this part below. This can be purchased directly on our site at your convenience and is available in black.
If you ended up changing your mind about the balance, just let me know and we can work from there.