SmartRack® SRSHELF4PSL is a standard sliding shelf for installation in rack cabinets. The SRSHELF4PSL has a 28.3-inch (720 millimeters) depth (29.5 inches including handle) and can support up to 50 pounds (22.7 kilograms). This extendable shelf can accommodate tower units, monitors and other equipment. It is designed for 4-post rack-mounting and the required mounting hardware is included. Expandable mounting rails supports installation in racks with front-to-rear rail distances between 28 inches (710 millimeters) minimum and 46 inches (1170 millimeters) maximum.