Coil Balance Spring
We carry a bunch of different coil balance covers, but that also presents a problem: there are enough options that I can't narrow it down without more information. Coil balance covers and retainers sort of all look the same, more-or-less. This curved style is especially popular.
If possible, I'd like to know the thickness of the springs. I'd also like a photo of the pivot shoe, which will require that you remove the sash from the window.
If I have those two pieces of information, I'm positive that I can recommend the best replacement for this cover.
This pivot she looks like our 15-199. Just go over the dimensions and compare them to your old pivot shoe to be certain. This pivot shoe is compatible with our Series 160 Coil Springs. For any damaged coil springs, search for stamped numbers on the old springs to know what springs you need to select. If there are no stamps on the coil springs, provide us the exact weight of your window sash and we'll work out what you need. Finally, for new housing, see our 15-150T.