SWISCO - The Replacement Hardware Authority

29" Channel Balance

A home owner from Carlsbad CA says:
I need to order a pair of 29" channel balances for a window that weighs 20 pounds. I'm sure that I need either the 380 or 385 series, but I'm having a hard time seeing any difference between them in the pictures. It appears from the picture that the 385 has a slightly deeper protrusions that catch the window base on the 15-004 shoe.

My shoe measures 1 and 1/16th inches from the sliders to the furthest extent of the protrusions.

Is this sufficient for you to advise which to order?

Thanks
Stuart
User submitted picture of channel balance attachments.
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Tom from SWISCO responded:
Thanks for posting! Yes, I would recommend the Series 385 channel balance, based on the dimensions of your bottom shoe. Even just eyeballing it, I can tell that it's a bit thicker.
A home owner from Carlsbad CA says:
Thanks for confirming that the channel balances I need are the 385-29's.

The window weighs ~20 lbs, so I think I want the 2830 stamp. However, my original channel balances are both stamped 2890.

Can you confirm that based on the 20 lb weight, 2830 is what I need, and that I can ignore the old stamp of 2890.

Thanks
Stuart
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Tom from SWISCO responded:
Yes; as you can see on the chart for on the S385-29 product page, the 2830 option is meant for window sashes that weigh 16 through 23 pounds.
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