Andersen® replacement sash balancer is used on Narroline® double-hung windows manufactured from 1968 to 2012. Used with 3062 units with non-tempered glass. Used with 2462 units with tempered glass. Balancer maintains the position of the window sash. They are found above the upper sash in the head jamb, and are located on each side of the window. This balancer is used on the right hand side of the window as viewed from the exterior of the window.