Scott Feldmann

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Friend from Fort Myers Fl

Dec 4, 2020 11:28 am

The metal with out the plastic is 21 . i believe the part is called a Channel balance. Window does not tilt

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Casey from SWISCO

Dec 8, 2020 9:31 am

Hello,

It looks like you have either our S351-21, with a 15-002 bottom attachment, or S390-21, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a 2050 spring strength option for your replacement balances. Thank you!

Comparison of the S351 and S390 balance shoes.