I need to replace 2 of these

Thanks for posting! Your window balances remind me of a few different balances we supply. To narrow down the correct series, I'll need to see the entire spring side of the window balance. I am particularly looking to see a photo of the bracket connecting the spring and the cord (string) in the center of the balance.

Please let me know if you have any questions.

Thanks for the additional photos. This balance can be replaced with either the S380-15 or the S385-15. To confirm the correct series, you'll need to measure the shoe's depth.

The 1430 stamp option should work for your sash, but you may want to double check that the weight falls between 10 to 12lbs.

Comparison of the S378, S380 and S385 balance shoes.