Window Balances

A home owner from Murrells Inlet South Carolina says:

January 30, 2023

Hi,
I need two new window balances. The metal channel on both is 28" long. They have 27D and what looks like 3.S.I. stamped on the metal. I've taken pictures to hopefully help identify them.

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Casey from SWISCO responded:

January 31, 2023

Hello,

With this combination of attachments, you could have either the S380-28 or S385-28 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment.

You'll also need 2740 spring strength options for your replacement balances. Thank you and let us know if you have any other questions or concerns.

Comparison of the S380 and S385 balance shoes.

A home owner from Murrells Inlet South Carolina says:

January 31, 2023

Thanks Casey!

I just ordered two of the S385 Balances with the 2740 springs.

A home owner from Murrells Inlet South Carolina says:

March 11, 2023

Hi,

I just installed the new balances but the window isn't catching them on the way down. So the balances aren't attaching to the window.

The plastic pieces on the window are brittle. The left side catches the balance and then it flies off partway down.

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Casey from SWISCO responded:

March 14, 2023

I'm sorry to hear that you're having trouble installing your balances. Your top sash guide reminds me of the 18-061 at first glance but the dimensions would be the determining factor. Take a look and compare the specifications below to your part. If you notice any discrepancies, please write out your exact measurements and we can go from there.

Unfortunately, I do not recognize the metal bracket that is also shown in your photos. It seems like it could be part of the sash frame. If so, unfortunately, that is not something that we can supply and would be specific to the manufacturer.

Alternate view of 18-061

A home owner from Murrells Inlet South Carolina says:

March 14, 2023

Thanks Casey, based on what remains of my top sash clips, I believe the dimensions are the same. I'll try a couple of these!

Casey from SWISCO responded:

March 14, 2023

Great! Please let us know if you need anything else.

28" Series 380 Channel Balance

S380-28

$10.97

28" Series 385 Channel Balance

S385-28

$10.97

1/2" Top Sash Clip, Pennco

18-061

$1.67

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