Channel balance id

Question

Stamp reads 2120 and CH, measures 22", not sure which series I need

Jasmine · Accepted Answer

Thanks for posting! Your window balance is a match for either the S351-22 or S390-22. To determine the series, you'll need to confirm the depth of your bottom shoe.

Our 2120 stamp will support a sash weighing 8 to 12lbs.

Comparison of the S351 and S390 balance shoes.