Prism Vinyl Replacement Window parts

A home owner from Frederick, Maryland says:
#8.5 40 in 89523L
5/12/26 1
white plastic cover also says 8.5
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Thumbnail of the uploaded file named Stamp
Thumbnail of the uploaded file named Coil
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Casey from SWISCO responded:

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! 

A home owner from Frederick, Maryland says:
The coil is 0.75 inches wide. Please let me know if you need anything else. Thanks. Paul
Thumbnail of the uploaded file named Coil end
Thumbnail of the uploaded file named Broken coil
Thumbnail of the uploaded file named Coil
Thumbnail of the uploaded file named Shoe top
Thumbnail of the uploaded file named Pivot shoe
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Casey from SWISCO responded:

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

A home owner from Frederick, Maryland says:
Thanks for all your help! I ordered a pair to try in my window.
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Casey from SWISCO responded:

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

Anatomy of a tilt window
Anatomy of a tilt window
VIDEO
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How to Replace a Triple Coil Balance System
How to Replace a Triple Coil Balance System
VIDEO
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How to replace a window coil balance
How to replace a window coil balance
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How to replace a Simonton coil balance
How to replace a Simonton coil balance
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How to remove window pivot shoes
How to remove window pivot shoes
VIDEO
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Removing Rusted Pivot Bars
Removing Rusted Pivot Bars
VIDEO
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Replacing the Simonton Coil Balance
Replacing the Simonton Coil Balance
GUIDE
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