Correct channel balancer

Question

My channel balancer is marked as 26 4 JR Caldwell. Which replacement would I use #2630 or #2640? Thank you.

Tom · Accepted Answer

You would use 2640 if you wanted to match "26 4." The best way to determine the option is to weigh the window sash, though. There is a chart on the product page that will tell you what option to use.