Searching for Window parts #5 .737.877

Hello, thank you for your patience during this busy season. This looks like an old block and tackle rod type balance. I can't tell exactly what type you have, but you can see our entire selection here. 

Keep in mind that this style of balance isn't made anymore. We may not carry the size you need. If that's the case, let me know and we can come up with a working substitute for you.