Works in 4Post cabinets Fits square, round, threaded holes Adjustable mounting depth: 10 - 30" (254 - 762 mm) Surface area: 16.3" L x 15.4" W (415 x 391 mm) Will accommodate most laptops & small desktops Capacity 75 lbs (35 kgs) Supports laptops up to 16.3" (414 mm) deep Cable management arm included 1U, 2U front cover High quality ball bearing slide rails FeaturesThe laptop shelf allows you to install your laptop in a 19" server rack. The rack mount laptop shelf provides 16.3" of space to accommodate most laptops. The high quality ball bearing slide rails provide 20" of extension and have a safety lock-out feature. The notebook shelf comes standard with a 1U and a 2U front cover. There is ample room in the rear of the laptop shelf to secure any cabling or AC adapter. The rackmount laptop shelf can support up to 75 lbs of equipment. There are optional transport straps available for the notebook shelf if required.