I'm trying to replace a channel balance on a Great Lakes Window Co double hung vinyl window that was installed in the late 90's. The metal section is 22" long. As shown in the picture, markings are: 21TG, looks like 3.S.I., and BJ.
Thanks!
Scott
I'm trying to replace a channel balance on a Great Lakes Window Co double hung vinyl window that was installed in the late 90's. The metal section is 22" long. As shown in the picture, markings are: 21TG, looks like 3.S.I., and BJ.
Thanks!
Scott
Hey, Scott. Your balance here looks like a dead ringer for our Series 770, though the stamp rating you show is not typically used on this Series. With that in mind I would recommend weighing your sash on a scale to confirm which option to choose. We have a chart on each Series 770 store page that tells you how much weight each option supports.