block and tackle window balalnce

Home Owner from San Francisco

Hi there!

I thought I would have to replace my whole window, but then I found your website. The old vinyl sash window has no brand name that I can find.

The sash weighs about 17 lbs. I don't have the hook part you ask for in the video. I think i threw it out with the broken cord. I hope I have provided enough information for an identification.

Thanks

Paul 

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Lauren
Lauren from SWISCO
SWISCO
Expert

Hello,

It looks like you have either our S351-24, with a 15-002 bottom attachment, or S390-24, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. If take out clips are needed, please see our 16-002.

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.

The spring strength you had was a 2340, but since your window sash weighs 17 pounds I would recommend using stamp option 2330 instead so the window sash functions properly. Please let me know if you have any questions. 

Home Owner from San Francisco
Hi Lauren,
Thanks so much for your response. It was extremely helpful. I am going to go with the S390-24 with the 15-001 bottom attachment. I'm going to order 3 just to have an extra on hand. I have also ordered some top sash guides and take out clips. I think this is going to work.
Lauren
Lauren from SWISCO
SWISCO
Expert

Great to hear! Please let us know if we can assist with future repairs. 

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