The StarTech 2U 19" Vented Universal Shelf is a portable and handheld rack unit designed for server racks. With a weight capacity of 50lbs, this wall-mounted shelf is perfect for organizing and supporting equipment in a server room. The vented design allows for optimal airflow to keep equipment cool and functioning efficiently. The 2U height makes it compatible with most standard rack units, providing a versatile and practical solution for organizing your server setup.