Replacement Window Balance

A quick learner from Arizona says:

I'm looking to replace two balances on a non-tilting window.

Length wise, the metal part of the old balance measures 34inches.

I'm not sure which part of the balance to measure for width - so I included two pictures. What appears to be the back (the part opposite where the pulley and spring would be located measures 1/2 inch.

The metal part of the balance is stamped "3330 B.S.I. RD"

As for the manufacturer of the window, its very difficult to tell as the sticker in the window is damaged and faded. It appears to say
PRODUCT: 3710/3710F

After some searching on Google it seems it could be made by Alenco Windows in Texas but I'm not 100% sure if that was the case. I do know the house was constructed in 2006
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Hello! Based on your pictures, I would recommend our S385-34 channel balance. I would also recommend the 3330 option, of course. Review this hardware and see if you agree.
A quick learner from Arizona says:
Hello! Thanks for the reply. My only concern is that the bottom shoe on the old one I have (pictured above on the right) doesn't have the side "wings" that the one you linked to seems to have. Should it still be ok?
Profile picture of Tom
Tom from SWISCO responded:
Oh, you're right! I'm sorry, I didn't notice that. See our S395-24, instead. This has a winged top and non-winged bottom.
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)