Channel Balance (2740) for single hung non-tilt vinyl window

Question

My channel balances are 31 years old with bad springs.  Can you identify the correct replacement part?  I need 6 of them.  Thank you very much.

Jasmine · Accepted Answer

Hey there,

Thanks for reaching out! Your window balances look like they can be replaced with the S351-28 or the S390-28 Channel Balance. You'll need to measure the depth of the shoe to determine which of these are the correct replacement. Take a look at the labeled diagram below for reference.

You'll need the 2740 stamp option.

Comparison of the S351 and S390 balance shoes.