Mad City Sales Practice Test

The balance system is placed in the side jambs of the window frame. This setup lets cords or springs counter the weight of the sash directly on the vertical sides, so the sash stays in place and can be raised or lowered smoothly. The bottom track is just the path the sash slides through, the top rail and the interior of the sash are parts of the moving sash itself, not where the counterbalance operates. So the side jambs are the correct location because they provide the counterweight directly adjacent to the sash for smooth, controllable operation.