Window Balancer & Slide Lock

Thanks for your photos. Based on what I see here, you have either our Series 380, Series 385, or Series 378 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. The diagram below will show you what I mean.

The side lock is not something I'm familiar with. Can you please show me a clearer photo? I'm wondering if they're more to it, or if this is all there is.

Comparison of the S378, S380 and S385 balance shoes.