Hi,
Can you help me identify this window part? I can't figure it out. It looks like 1/2 inch. 27-4 AA CMC 7. I need 4 of them.
Window Part

Handy Person from Los Angeles
Sep 20, 2021 11:04 pm
2 user uploaded images
2 Replies

Casey from SWISCO
Sep 27, 2021 10:15 am


Hello,
It looks like you have either our S351-28, with a 15-002 bottom attachment, or S390-28, 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 2740 spring strength option for your replacement balances. Thank you!

Comparison of the S351 and S390 balance shoes.
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