"Components of the Park Avenue Collection's U workstation feature tops with 1-1/8"" thick three-ply balanced panel and solid core construction. Resists warping. Adjustable hex leveling glides allow floor-standing furniture to be leveled without lifting the unit; glides have 3/4"" adjustable range. Two cord management grommets, for routing and hiding wires and cables, are located in the end panels of all desks. Component tops and backs/modesty panels are sized in 15-3/4"" wide increments to correspond with modular pedestals. Component tops and backs/modesty panels must be used in conjunction with modular pedestals, measure 1-1/8"" thick and provide finished back for modular pedestals or an enclosed kneewell. End panels support the end of a component top if no modular pedestal. Depth of end panels are 3/4"" less than the depth of the component tops to accommodate the modesty panel. Cannot be used as return or desk shells. Meets or exceeds ANSI/BIFMA and ISTA performance standards. This is a special order item, please allow 4-8 weeks for delivery."