Main Ts are suspended by suspension system and carry the weight of the Grid system. These Ts have a system of interlocking with each other in other to provide an additional length and thus from a continuous mesh across the space where they are used
They have following features
Cross Ts are used intermittently at the specified distances and are inter locked with the main Ts. Typically the Cross Ts are of two sizes: 1200mm and 600mm they thus form modules with makes a mesh/grid.
Wall angle is fixed to the perimeter of the wall at the ceiling level to hold the main Ts and give a finish when it terminates on the wall.