sliding window sash balance

Home Owner from Canada
Hello,
The length is about 662mm, the width is 9/16 inches, and there is a part measuring 1 1/16 inches,i don't know which sash balance is suitable.and You can see in the photo, there are some numbers printed on the metal:10/07 unique25-D-40.
Thank you for your help, have a great day.
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2 Replies
Emily
Emily from SWISCO
SWISCO
Expert

Hello!

Thanks for reaching out to us. The S380-26 and S385-26 look like matches. The Series 380 has a 1" deep shoe and the Series 385 has a 1-3/32" deep shoe. However, we don't sell a balance with a 1-1/16" deep shoe. You may want to double-check and measure as shown below to make sure. 

Your old stamp may translate to our 2540 stamp option. A pair of balances with this stamp will support a sash weighing 19 to 25 pounds but you could always weigh the window sash on a bathroom scale to confirm. 

Comparison of the S378, S380 and S385 balance shoes.
Comparison of the S378, S380 and S385 balance shoes.

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