Horizontal balers are commonly used to bale shredded paper processed by a plant-based shredder or a mobile shredding truck. The horizontal baler utilizes a hydraulically driven compression ram that moves horizontally to compress materials that have been loaded into a vertical chute. This type of baler is available in manual-tie, closed-end and open-end designs. An auto-tie unit is an accessory on most open-end balers. Lower-volume applications typically call for a manual-tie baler. Auto-tie balers are generally used in applications of 60-100 tons or greater per month. Vertical balers are commonly used to bale OCC (Old Corrugated Containers). The material is hand loaded into the baler hopper and the baling ram moves vertically from top to bottom to compact the material. After each compaction stroke, the ram retracts so that more boxes can be loaded into the hopper. When the bale chamber is filled, a buzzer activates to let the operator know that it is time to manually insert and tie-off the bale ties.