NavePoint Sliding Rack Vented Server Shelf 1U 19" 4 Post Rack Mount Adjustable 14" - 17" Dimensions: 2.25"H x 17.38"W x 13.88"D 77 pound weight capacity Slotted venting Lip Shelf Extension: 9" Made of high quality cold-rolled steel with a powder coating Shelf can support up to 77lbs Maximum mounting depth of 17.25&#034; and a minimum mounting depth of 14&#034; Shelf extends 9&#034; Compatible with any 19&#034; enclosure 1 4-Post Sliding Shelf M6 screws, cage nuts, and washers