NavePoint 1U 19-Inch Fixed 4-Post Rack Mount Server Shelf With Adjustable Depth From 18-42" Black Dimensions: 1.75"H x 17"W x 31.5"D 110 pound weight capacity Slotted venting No Lip Color: Black Made of high quality cold-rolled steel with an electro-static powder coating Shelf can support up to 110lbs Maximum mounting depth of 41.75&#034; and a minimum mounting depth of 17.75&#034; Compatible with any 19&#034; enclosure 1 4-Post Adjustable Shelf 10-32 screws 12-24 screws