NavePoint Sliding Rack Vented Server Shelf 1U 19" 4 Post Rack Mount Adjustable 24" - 26" Dimensions: 2.25"H x 18.25"W x 25.63"D 77 pound weight capacity Slotted venting Lip Shelf Extension: 14.13" Made of high quality cold-rolled steel with a powder coating Shelf can support up to 77lbs Maximum mounting depth of 25.5&#034; and a minimum mounting depth of 24.5&#034; Shelf extends 14.13&#034; Compatible with any 19&#034; enclosure 1 4-Post Sliding Shelf M6 screws, cage nuts, and washers