Vinyl double hung units with broken ballasts.

Question

We have several windows, actually all of them that need replacement ballasts. All windows are the same size and should have same springs. I will verify once we get a part number. Thank you for the help.

Casey · Accepted Answer

Hello,

With this combination of attachments, you could have either an S380-27 or S385-27 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. You'll also need 2640 spring strength options for your replacement balances.

Thank you and let us know if you have any other questions or concerns.

Comparison of the S378, S380 and S385 balance shoes.