Channel Balances 2640 Stamp

Hello,

It looks like you have either our S351-27, with a 15-002 bottom attachment, or S390-27, 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 2640 spring strength option for your replacement balances. Please note that it is important to replace the balances on both sides of the window to ensure that the sash is evenly supported. Thank you!

Comparison of the S351 and S390 balance shoes.