The Vertical Stacker for the Challenge CMT 130 TC Single-Knife Trimmer is a delivery system designed to automatically collect and organize trimmed materials as they exit the trimmer. After sheets, stacks, or book blocks are cut, the vertical stacker receives them and arranges them into neat, upright stacks. This reduces manual handling, minimizes the risk of misalignment or damage, and keeps the workflow organized. By maintaining consistent, compact stacks, the vertical stacker facilitates easier downstream processing, such as packaging, binding, or transport, while improving overall efficiency, safety, and productivity in medium- to high-volume production environments.