Tripp Lite's SmartRack SRSHELF2PDP is a 2U cantilever mount fixed shelf. Cantilever shelf supports monitors and other equipment with a 27 kgs (60 lbs) capacity. Shelf is compatible with 2 or 4 post rack enclosure cabinets. The SRSHELF2PDP is 21 inches in depth but can use two shelves back to back to create a deep fixed shelf in 2POST racks. Required mounting hardware is included.\n - Fixed Shelf, 2U Cantilever mount. Required mounting hardware included\n - 2 or 4 post rack compatible\n - 21 inch shelf depth\n - Cantilever shelf supports monitors and other equipment\n - Cold rolled steel with black finish.\n - Use two shelves back to back to create a deep fixed shelf in 2POST racks\n\n - Shelf and mounting hardware\n\n - 2U cantilever mount fixed shelf\n - Cantilever shelf supports monitors and other equipment with a 27 kgs (60 lbs) capacity\n - Shelf is compatible with 2 or 4 post rack enclosure cabinets\n - SRSHELF2PDP is 21 inches in depth but can use two shelves back to back to create a deep fixed shelf in 2POST racks\n - Required mounting hardware is included