Replacement Balances

Question

I need help replacing my block and tackle window valances with the numbers 2630 BSI with an 18 pound sash

Bob · Accepted Answer

This appears to be either a S380-27 or S385-27. The only difference between these two balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement. See the illustration below for details. For a new stamp option choose 2630.

Comparison of the S378, S380 and S385 balance shoes.