How much clearance space do I need around my workstation for proper ventilation?

You should provide at least 15.24 cm (6.00 in) of clearance at the front and back of the workstation, and 10.2 cm (4 inches) clearance at the back and above the monitor. Operate the workstation on a sturdy, level surface and never restrict incoming or outgoing airflow by blocking vents or air intakes.