FeaturesDepth adjustable 450 to 1050 mm (17.7 to 41.3 in) in 25 mm (0.98 in) incrementsEIA universal 5/8 - 5/8 - 1/2 in spaced 12-24 tapped holes or 3/8 in square holes fit 19 in rack equipmentCompatible with 19 in rack accessoriesAvailable with nominal frame height of 6, 7 and 8 ftRU markings on both front and back of tapped hole uprights make it easier to mount equipmentFloor mounting holes predrilled at 3/4 in Dia12-24 rack mounting screws included with tapped-hole model