Prism Vinyl Replacement Window parts

Home Owner from Frederick, Maryland
#8.5 40 in 89523L
5/12/26 1
white plastic cover also says 8.5
3 user uploaded images
6 Replies
Casey
Casey from SWISCO
SWISCO
Expert

Hello,

We'd be happy to look into this for you but we'll need a bit more information to get started. If you could show us the end of the coil, as well as the pivot shoe that the coil spring connects to, that would help us narrow down your options. Please also write out the exact width of the coil. Thank you! 

Home Owner from Frederick, Maryland
The coil is 0.75 inches wide. Please let me know if you need anything else. Thanks. Paul
5 user uploaded images
Casey
Casey from SWISCO
SWISCO
Expert

Thanks for getting back to us. Unfortunately, we do not carry an exact match for your coil balance assembly that uses the same show but your springs are similar to the 3/4" thick S159 coils. The stamp code indicates that you would need the S159-8, which is used with the 15-255 support or the 15-256 for dual springs. 

Alternate image for S159-8
Alternate image for S159-8

We also offer a conversion video below if you'd prefer to replace all of the hardware, including the pivot shoes. This could work for you as long as the width and thickness of the replacement shoe match yours. Look over both options and see what you think. 

Dimensions for 15-259
Dimensions for 15-259

Home Owner from Frederick, Maryland
Thanks for all your help! I ordered a pair to try in my window.
Casey
Casey from SWISCO
SWISCO
Expert

Great, just let us know if you have any other questions once the order arrives!

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