Window Balance ID Help

Hey there! It appears you have either our S380-28 or S385-28 with a 2740 stamp. To confirm which series is the correct fit for your window, you'll need to confirm the depth of the bottom shoe. It should either be 1" or 1-3/32". If it is neither of these measurements, please let me know.

Comparison of the S378, S380 and S385 balance shoes.