20 4 Caldwell KL window balance

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Home Owner from Seattle WA

Jun 11, 2024 10:35 am

I need to replace my 20 4 Caldwell KL window balance.

Do you know which product I need based off of this info?

1 user uploaded image

3 Replies

Home Owner from Seattle WA

Jun 12, 2024 12:16 am

Window weight: 20lbs
Balance length: 22"
Balance Width: 7/8"
Balance depth: 11/16"

5 user uploaded images

Casey from SWISCO

Jun 13, 2024 11:22 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.

Note that the length only includes the metal channel, not the end fittings. You'll also need a 2040 spring strength option for your replacement balances. Thank you!

Comparison of the S351 and S390 balance shoes.