Replacement window springs UB 28C marking on springs. 28" length channel
Hello!
We'd be happy to help but we'll need you to remove an undamaged balance with the end fittings intact to compare to our inventory.
Thank you!
Thanks for the additional pictures!
With this combination of fittings, you could have either an S380-29 or S385-29 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom fitting, and the Series 385 has a 1-3/32" fitting. A stamp of 28C usually corresponds to our 2830 option, but you can always weigh your sash on a scale to confirm.
Let me know if you have any questions!
It's possible that you might need balances with our 15-029 shoe attached. This has a depth of 7/8". If this is indeed the case, this is not a stock item but we can provide it for you via custom order.
It's also possible that your shoe may have worn down over time. Can you confirm the exact depth of your bottom shoe? You may want to check the balance on the other side of the window or from an identical window to be certain.
Let me know what you find and we can work from there.
Gotcha! If it's over 7/8", your shoe has most likely just worn down. Let me know how everything works out and good luck with your repair!
