Simonyi window 40-06 single hung

A quick learner from 47909 says:
Plastic cover over coiled metal is breaking on several Windows that are 15 years old.
User submitted a photo of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting! Hopefully we can help. First, determine the thickness of the coil spring inside your housing. For a 1/2" thick spring, I recommend our 15-150D. For a 3/8" thick spring, consider our 15-204 instead. Keep in mind that our new style coil spring covers now only use one installation screw.
How to replace a window coil balance
How to replace a window coil balance
VIDEO
WATCH >
How to Replace a Triple Coil Balance System
How to Replace a Triple Coil Balance System
VIDEO
WATCH >
Removing a Triple Coil Window Balance
Removing a Triple Coil Window Balance
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.