White "shoe" is 1.25" x 1.25"

Thanks for writing in! There is a good chance we can supply you with a replacement for the coil balance assembly you have pictured here. Although, I will need to see a photo of it removed from the window to identify the correct replacement. You'll also need to have it removed to confirm any stamps/markings on the metal coil.

Please let me know if you have any questions.