30 inch/ house built 2009/ Aluminun Huricane Resistant Windows

Thank you for submitting your inquiry to our discussion board.

The difference between the Series 380 and Series 385 balances lies in the shoe.

Comparison of 15-004 and 15-005

The series 385 balance has the 15-004 shoe which is slightly larger from front to back, as illustrated.

If you measure your shoe as it is pictured here, you should be able to determine which one you need.

Please let me know if you have other questions.