25 4 HW CMC 11

Thanks for your post! This window balance can be replaced with either the S380-26 or the S385-26. You'll need to measure the depth of the bottom shoe to confirm the correct series.

The 2540 will likely work for the window but it is suggested to double check that the sash weighs between 19 to 25lbs.

Comparison of the S378, S380 and S385 balance shoes.