Replacement balance springs complete
Home Owner from Florida
May 3, 2025 11:04 am
For the left side of a MI3540 single hung window
2 user uploaded images
2 Replies
Lauren from SWISCO
May 8, 2025 11:52 am
Hello, thank you for posting,
Your window uses a double coil setup. Please review the S161-09 along with the 15-086 tandem housing. For the spring in the tandem housing, see the S180-10 based on the numbers stamped on the balance. Also review the 16-030 bracket.
Compare dimensions to confirm a good fit and let us know if you have any additional questions.
Alternate image for S161-09
Detail of 15-086
Dimensions of 16-030
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