Channel balances

Handy Person from Toronto, Canada

Aug 3, 2021 10:55 am

Hello,

I need four replacement channel balances. Length of the aluminum piece is 30 15/16", not counting the plastic end pieces. Please let me know if you need any more info. Thanks!

Brad

5 user uploaded images

4 Replies

Emily from SWISCO

Aug 6, 2021 2:04 pm

Hello there!

It looks like you have either our S351, with a 15-002 bottom attachment, or S390, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. Can you also double check the length on your metal channel for us?

Is there a stamp on your metal channel? If not, you'll need to remove and weigh your sash to choose the appropriate spring strength option. There's a chart on the S351 and S390's store page that will show you which option you'll need based on the weight of your sash.

Comparison of the S351 and S390 balance shoes.

Handy Person from Toronto, Canada

Aug 10, 2021 9:05 am

Thanks Emily!

Well, this is irksome. I measured the bottom attachment (on three different units) and came up with 1 1/16". What do we do with that?

I've confirmed that the metal channel pieces are 30 15/16" each. They're stamped "30C U.S.B." Does that help, or should I weigh the sash?

Cheers,
Brad

2 user uploaded images

Emily from SWISCO

Aug 11, 2021 9:27 am

No problem, Brad!

A measurement like that makes me think your shoe was once 1-1/8" deep but wore down from use over the years. It happens quite frequently. In that case, I think you should go with the S390-31. We also suggest weighing your sash to choose the appropriate spring strength option. There's a chart on the S390-31's store page that will show you which option you'll need based on the weight of your sash.

If you have any further questions just let us know!