Dwc balancer

Hey there!

Thanks for reaching out to us. Take a look at the S351-21 and S390-21 channel balances. The difference between them is the depth of the bottom shoe so you'll have to measure as shown below. You can also select the 2030 stamp option for your replacement balances. 

Please let us know if you have any questions. 

Comparison of the S351 and S390 balance shoes.

In that case, you'd want the S351-21 since the shoe is 1" deep. You can also select the 2030 stamp option based on your old 20 3 stamp. All orders can be placed on our website at your convenience!