To watch how to video to find the Call Out to order jamb liners see below. Don't forget to like and subscribe!
Kit Includes: Left and Right Jambliner and Balance System
For Hurd Aluminum Clad Premium (Tilt) - Double-Hung - March 22, 2002 - August 15, 2010
How To Order New Jamb Liners for Alum/Clad Double Hung (click on picture for diagram): To find the Hurd Call Out Size, measure the visible glass width and visible glass height of your window sash (either bottom or top sash). Then round your measurement up to the next Even inch.
Example: If your visible glass measurement is 15" wide x 13" Height. Then round up to the next even inch. Your call out / what you would order would be 16 x 14