Kapaka: Need to replace both left and right window balances

Question

Item is non-tilt
1/2 inch wide
27 inch long
Markings say "26 5 IW CMC 11"
To me, it looks like S378 or S380 or S385, but I can't tell what the differences are between those?

Bob · Accepted Answer

Thanks for posting. Yes, the shoe depth is what distinguishes these balances. It's tough to say from a photo of a roller. But if the depth is any greater than 1", it's the S385-27. See below. For a stamp option choose 2650.

Comparison of the S378, S380 and S385 balance shoes.