3240 Window Balance

Thanks for posting. See the S380-33 or S385-33 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 your old balance's shoe depth to see what matches best. For a stamp option choose 3240.

Comparison of the S378, S380 and S385 balance shoes.