This is the most traditional containment solution, where the racks support the roof system and doors. When the scope of the data center is clearly defined, and no further corridor expansions are expected, this is generally the ideal solution to deploy. 
 

Also known as Horizontal Containment. In this solution the aisle receives cold air coming from a raised floor and it is contained in front of the IT equipment, cooling it down when it goes through the cabinets and expelled as hot at the rear of the cabinets. Available as traditional or free-standing containment. 
 

All the solutions above are shown as schematics to help you understand the fundamentals of their construction and the airflow paths. These can be modified to match your requirements.