26-4 AA CMC 7

Thanks for reaching out! There's a good chance we can supply the replacement for this balance. To determine the correct replacement match, I'll need to see a clearer photo of the bottom attachment and a photo of the top attachment.

Please let me know if you have any questions.

Thanks for the additional photos. Your window balance can be replaced with the either the S380-27 or the S385-27. To determine the correct replacement match, you'll need to confirm the depth of the bottom shoe.

Our 2640 stamp will support a sash weighing 13 to 19lbs.

Comparison of the S378, S380 and S385 balance shoes.