Prelude® 15/16-in grid system is used to install 2-ft x 2-ft and 2-ft x 4-ft drop ceiling panels. This system allows for easy access to pipes, ductwork, and wires. The complete system consists of the following components: main beam, cross tees, and wall molding. Prelude® grid system is also available in a all-in-one complete installation kit in white or black