broken part on side of window

Question

What is this part that is on the side of the window and connects to the  Channel Balance? Thank You

Casey · Accepted Answer

Hello,

The part shown in your photos is referred to as a top sash guide, whcih resembles the 18-171. To confirm that this is the correct replacement, take a look at the measurements below to ensure that they match up to your part. Thank you!

Alternate image for 18-171

Alternate view of 18-171