Tripp Lite by Eaton SmartRack 2U Cantilever Toolless Mount Fixed Shelf (50 lbs /22.7 kgs capacity; 18 in./457 mm Deep)The Tripp Lite by Eaton SmartRack 2U Cantilever Toolless Mount Fixed Shelf is the go to solution for organizing, supporting, and expanding your 4 post rack system. With a sturdy all steel construction and a focus on ease of installation, this 18 inch deep shelf provides reliable, high capacity support for a range of equipmentfrom tower UPS units to monitors and compact servers. Designed for 19 inch equipment and optimized for SmartRack enclosures, it