Fully adjustable riser lets you customize viewing level to prevent neck strain. Convenient storage tray holds paper, pens and clips, keeping supplies off your desk but within easy reach. Nonskid rubber feet protect work surface from scratches and scuffs. Supports 21" monitors up to 80 lbs. Adjusts from 4" to 6 1/2". OEM/Compatible: Compatible; Workstation Type: Mobile Workstation; Traditional Desk/Table; Series Name: Fellowes® Office Suites™; Width (Max): 19.78".