Part Selection

Thanks for posting. Please double-check the metal channel length, not including the end attachments, I suspect it may be 15". If so, this looks like either an S351-15 or S390-15. The only difference between these two channel balances is the 'depth' of the bottom nylon shoe, as shown below. Measure your old balance's shoe depth to see what matches best. For a stamp option choose 1440.

Comparison of the S351 and S390 balance shoes.