The Horizon ST-R stacker receiving tray is a specialized book production solution designed for small-volume operations, offering efficient stacking capabilities for printed materials. Ideal for post-press processing, this compact unit enhances workflow productivity by providing flexible stack opportunities, including flat or laterally shifted stacking. Compatible with multiple Horizon models such as the MC-80a, VAC-100a, VAC-60Ha, VAC-1000, and VAC-600, it ensures seamless integration into existing production lines. With robust paper handling and precise stacking, the ST-R is well-suited for applications in commercial printing, publishing, and in-plant print shops where reliable and organized output is essential.