Please see minute 2:16 of the video below to determine whether you have a residential tilt or challenge series balance system.
Tom explains how to measure for new jamb liners for BiltBest double hung windows. Please contact us if your BiltBest Windows require replacement parts; we are located in the same community as BiltBest Windows and employ many former BiltBest Windows employees.
sales@biltbestreplacementparts.com
866-305-5577