Hell0 - Can you please help me determine which ballast I should order from you.
Pics Attached. Part 21B Channel is 22" long without the plastic ends
Thank you!
Hey there!
Thanks for reaching out to us. It appears your top and bottom fittings are wingless. With that in mind, I recommend you have a look at the S351-22 and S390-22. The difference between these two parts is the depth of the bottom shoe as shown below.
Your 21B stamp may translate to the 2120 stamp. A pair of balances with this stamp will support a sash weighing 8 to 12 pounds. You can always weigh the sash on a scale to confirm.
Let me know if you have any questions!
