BSI replacement window Balance

Question

Hi there, see the photos attached.   i am looking to replace this balance. The length of the metal is 26 inches minus the plastic it is 5/8 deep and 1/2 wide.   I need 2  for one window.

Bob · Accepted Answer

Hello there. Do both nylon attachments lack 'wings', or side tabs? I think that's the case, but please confirm. If so, this is either an S390-26 or S351-26 Channel Balance. The only difference between these two balances is the 'depth' of the bottom nylon shoe, as seen below. Measure your old balance's shoe depth to see what matches best. In either case, for a stamp option choose 2550.

Comparison of the S351 and S390 balance shoes.