Please help

Question

I have a single hung window that needs a set of balancers but I am not sure what to order. The window is 50 1/2 " wide X 30 1/2" high. The balancer lenght is 29" long. The metal channel is 1/2" wide X 5/8" deep. I included photos with this email. I do not know the weight capacity of the springs.
The window is made by Milestone and included the imformation tag in a photo attachment.

Tom · Accepted Answer

Thanks for your photos. Based on what I see here, you have either our S380-29 or S385-29, 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.