Vinyl tilt window coil balances
thank you,
sincerely,
Jose
Thanks for contacting us! We can replace this hardware, yes. I'm told by my colleague Manuella that you've identified this spring as our Series 190 (and I agree), but that yours is stamped with "9."
This indicates 9 pounds of support on each side, for a sash weighing 18 pounds. I'm afraid we don't have a spring that strong, though. The closest solution we can recommend is using a 4 pound S190-440 and 5 pound S190-540 on each side. This should work just as well, but you may need a new detent clip for a double-spring setup. See our 15-181 clip and 15-182 barrel.
Yep! That all looks good to me. Thanks again for considering us, and please let me know if you have any questions.