cross bow string broken for window mode H-R25-46x77 twinseal single hung slide window

We should be able to help, yes. Crossbow balances are actually obsolete, so no company is making them anymore, but the good news is that we sell modern replacement balances that can work just as well.

Before I suggest anything, though, I need to know what kind of configuration we're working with. I'd like to start with photos of your old balance assembly. Specifically, I need you to remove an undamaged version of the old balance and show me a clear shot of the top end, bottom end, and the pivot shoe. I'll also need you measure the overall length; this is why having an undamaged version is essential. It's not possible to accurately measure these when they're broken.

Lastly, please weigh your sash on a scale and give me the exact weight. This will allow us to calculate the right spring calibration.

Thanks for these photos. There are some important details that are still obscured, though. I also don't have all of the information that I requested in my previous response; all of that data is necessary, so we can't skip anything.

At this stage I still need a clear photo of the top and bottom ends of an undamaged balance, the pivot shoe, and I'll also need the exact weight of the sash. As mentioned before, a broken balance isn't really going to help us in terms of identification. It has to still be in good condition and it has to be removed from the window. Please let me know if it's possible and we can work from there.

As mentioned before, I need everything I asked for in my previous response. Each one of these details is vitally important and we can't move forward without them.

Perfect, thank you! This is a huge help. This old balance can be replaced with our modern Series 795. It's a fairly straight forward conversion but it does require handiwork to complete. The good news is that we have a tutorial video that shows you how this can be done, step by step. I'll share the video below. As long as you follow the instructions in this video you will get your window back in working order, but please don't hesitate to reach out if you had any questions. I'm happy to help on any point.

Great! All orders can be placed directly on our site at your convenience. The store page for each individual product has been linked to in our conversation above.

Alternatively, you can call our customer service reps at (888) 991-1929 and they'd be happy to assist you in placing an order.