Coil Balances for Tilt 48 lb. Window

Question

I have a 30H x 48W double hung impact window that the balances on the lower sash have broken. The weight of the window is 48 pounds. The springs are mangled, and some are broken. The spring housing is brittle and broken as well. There are 3 coils on each side of the sash. I could not find any makings indication the weight capacity of any of the coils. Will 2 sets of the Series 210 Roller Tilt Balances S210-24 (2 coil assembly) work for these windows or should I opt for 3 coils per side?

Or should I use some other arrangement. Please advise.

Casey · Accepted Answer

Hello,

Your pivot housing resembles the 15-087, which uses the Series 180 coil springs, along with the other items under the related items section of the product page.

One thing to note is that a 48-pound window sash is rather heavy for this type of coil system. Your original coils should have numbers stamped on them to confirm the corresponding strength options. If you're confident about the weight of your sash, I believe you will need two S180-9 and one S180-4 on each side of your window to support a total of 48 pounds. Thank you.