I need 5 window balance

Question

I need 5 of this window balance abut i cannot identify them, and I need your help, I really thank you in advance.
these is a 29 long X 1/2 wide, and in letters 26 3 BQ CALDWELL

Tom · Accepted Answer

Thanks for your photos. Based on what I see here, you have either our S380-27 or S385-27, depending on the depth of the bottom shoe. That's the only difference between them. I recommend measuring your shoe and referring to our dimensions to confirm the best match.

Comparison of the S378, S380 and S385 balance shoes.