The Luxor 40" Mobile Presentation Station combines simple design, solid construction and multiple surfaces to deliver a cost-effective solution for office and classroom presentation needs. A bottom shelf with 19.75" of clearance offers ample space for PC towers and the height-adjustable second shelf serves as a keyboard tray whether you''re sitting or standing. When it''s time to store or use the cart elsewhere, four rolling casters with two locking brakes make maneuvering quick and easy.