Balance- stamped 3290 ha36

Hey there!

Thanks for reaching out to us. Depending on the depth of the bottom shoe, it looks like you have either the S380-33 or S385-33. Measure the bottom shoe as shown below to determine the best match. 

You will also have to weigh the window sash since your old stamp is from an old rating system we don't use. There's a chart under the product description on the S380-33 and S385-33 store pages that you can use as a reference. 

Let us know if you have any questions! 

Comparison of the S378, S380 and S385 balance shoes.