window channel balance

Question

it's 28" from metal to metal. (head to toe). Spring is 10.25" hook to hook. Help me find Help

Bob · Accepted Answer

Thanks for posting. This looks like either an S351-28 or S390-28 Channel Balance. The only difference between these two balances is the 'depth' of the bottom nylon shoe, or the 'heel-to-toe' measurement. See the diagram below for reference. Measure the depth of your old balance's shoe to see what matches best. In either case, for a stamp option choose 2720.

Comparison of the S351 and S390 balance shoes.