Window spring

Quick Learner from Vista California

Hi,

I have a window spring that's stamped 2790 13. What should I replace it with.

Best Regards

Johan 

4 Replies
Emily
Emily from SWISCO
SWISCO
Expert

Hi there Johan.

Thanks for reaching out to us. We'd be happy to see if we can help with something like this. Can you remove an undamaged balance assembly from the window and show us photos? We're specifically looking to see the top and bottom fittings. 

Quick Learner from Vista California
Here's the pictures you requested
3 user uploaded images
Emily
Emily from SWISCO
SWISCO
Expert

Thank you kindly! This looks like it could be the S380-28 or S385-28 depending on the depth of the bottom shoe. Measure as shown below to determine the best match. Your old stamp is outdated so you must weigh the window sash on a scale to pick out the proper stamp for the replacements. There's a chart under the product description on the S380-28 and S385-28 store pages that will tell you what option is best based on the weight of the sash. 

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

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