NUMBER 158 FOUND ON CHANNEL

Hi there!

Thank you for reaching out to us, Terry. Your balance looks like a match for the Series 380 or Series 385. You'll have to measure the bottom shoe as shown below to determine the best pick.

Note that the length is determined by measuring only the metal channel. You will also need to weigh the window sash on a scale to confirm the stamp option for the replacements. There's a weight chart on the S380 and S385 store pages under the product description that you can use as a reference. 

Please let us know if you have any questions. 

My apologies! Please see the photo below where we show the difference in shoe depth. 

Comparison of the S378, S380 and S385 balance shoes.

Great, your next step would be to measure the length of the metal channel. You'll then need to weigh the window sash on a scale to confirm the stamp option for the replacements. There's a weight chart on the S380 and S385 store pages under the product description that you can use as a reference. You're also welcome to get back to us with the sash weight. 

Please note that all orders can be placed on our website at your convenience.