which ones do I need window Balance

Question

Hello,
I have 20 Jordan windows that I need new channel balances for. I know they are 3330s but I need help getting ones with the correct sash glides. Pictures of the glides attached.

Bob · Accepted Answer

Thanks for posting. This looks like either an S351-34 or S390-34 Channel Balance. The only difference between these two balances is the 'depth' of the bottom nylon shoe, or the 'heel-to-toe' measurement. See below. Measure your old balance's shoe depth to see what matches best. For a stamp option choose 3330.

Comparison of the S351 and S390 balance shoes.