Trying to identify old window balance

A home owner from Sunderland, MA says:

September 5, 2022

Hello,

I'm struggling to find a replacement or id my current (broken) windows balance. The house was built in 1986 and I believe these are the original wood sashes.

Any help greatly appreciated! The only marking is B.S.I 24. The metal piece is 25" long.

Best,
Sean

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Emily from SWISCO responded:

September 7, 2022

Hi, Sean.

Your balance looks like our S751-25 which comes attached with the 15-014 shoe. You'll also need to weigh your sash on a scale and refer to the chart under the product description to determine the correct spring strength option for your hardware. Look over the specifications for this part, along with the related video, to see what you think.

A home owner from Sunderland, MA says:

September 7, 2022

Wow, Emily -- I think you nailed it. I ordered 2 to check. What a great service!

Thanks much,
Sean

Emily from SWISCO responded:

September 8, 2022

You got it, Sean! I'm always happy to help. If you need anything else, just let me know!

25" Series 751 Channel Balance

S751-25

$11.25

How to install a ribbed tilt channel balance with knife lock shoe

VIDEO

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