In need of new part

Question

Please see the attached pictures of my channel balance. The length is 22 inches. But I can't figure out what model I have. There is a stamp on the back that says "21 b"  thanks for your help.

Emily · Accepted Answer

Hello there!

Thank you for reaching out to us. Take a look at the S351-22 and S390-22 channel balances. One of them could be what you need depending on the depth of the bottom shoe as shown below. The 21B stamp may translate to our 2120 stamp option. A pair of balances with this stamp can support a sash weighing 8 to 12 pounds but you can always weigh the window sash to confirm.

Comparison of the S351 and S390 balance shoes.