broken coil

I'm very confident that we can supply a working coil balance system for you, but before I recommend anything, I'll need a clear picture of the pivot shoe to which it attaches. It is very obscured in your current photos and I can't make it out.

Please also tell me the thickness of the spring itself.

Once I have those two pieces of information, I can find you a balance spring that will be compatible with your window.

Your pivot shoe looks similar to our 15-199. Please compare our dimensions to yours to confirm. The coil spring housing, meanwhile, is the 15-086. Finally, as for your coil, I recommend the Series 160. You need the stamp on your old spring to choose the best option.

Thank you. I'm afraid they don't make an 8 pound option for this spring anymore. This must be an older version. I think you can still use our S160-7, but note that these only carry 7.5 pounds per spring, instead of 8 pounds. I honestly don't think you'll notice a big difference, but it's something to keep in mind.