Identify Window Channel Balance

Thanks for writing in. It appears you have either the S351-28 or S390-28. The only difference between these two channel balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement. See the diagram below for reference. Compare both with your old hardware to see what matches best. In either case for a new stamp option choose 2730.

Comparison of the S351 and S390 balance shoes.