window balance id

Home Owner from Minnesota

May 1, 2024 7:39 pm

Hi there

We just pulled these out of our window as we couldn't close it anymore. I, unfortunately, didn't take any photos of them IN the window.

The metal frame is almost exactly 28" long and the only markings I can find are "2740 BSI OF"

If you need any more info please let me know.

Thank you!

Richard

3 user uploaded images

5 Replies

Home Owner from Minnesota

May 1, 2024 7:45 pm

added additional photos

5 user uploaded images

Tom from SWISCO

May 2, 2024 2:02 pm

Thanks for your photos. Based on what I see here, you have either our S380-28 or S385-28, depending on the depth of the bottom shoe. That's the only difference between them. I recommend measuring your shoe and referring to our dimensions to confirm the best match.

Comparison of the S351 and S390 balance shoes.

Home Owner from Minnesota

May 2, 2024 3:00 pm

Hi

Thank you for the information!

Using my cheap digital caliper that measurement of the shoe is roughly 1.05" so I am assuming this is the 1" (however the shoe on my old balance is somewhat worn down or mangled - kind of hard to measure with only 1/8" being the difference between the two)

Also, the photos you posted show S351 and S390 but you reference S380-28 or S385-28.

2 new photos attached showing the caliper measurement and the "worn down" areas of the shoe - not sure if these were originally 1-1/8" and have worn down over their roughly 20 years of age or were originally 1" and got mangled making it measure ~1.05"

Can you please verify which ones I should order?

Thank you!

2 user uploaded images

Tom from SWISCO

May 3, 2024 10:45 am

Yes, that is correct; you have either the S351-28 or the S390-28. My apologies for the typo!

In regard to the depth of the shoe, you may be better off measuring with an actual measuring tape. It looks like it may be the 1" shoe, but given the damage to the shoe, your guess would be just as good as mine.

I'm sorry that I could not give you a more concrete recommendation.