30” window balancer for milgard window

We have this on our site. I've got to walk you through the process of telling if this is Series 380 or Series 385, though. See which shoe, shown below, you have. I suspect you have the 1-3/32" shoe, which would mean you have S385-30. If it's 1", choose S380-30. In either case, 2930 is the "option" that replaced 29 3.

Comparison of 15-004 and 15-005