... grids are made of galvanized steel and color steel,Ceiling T grids has many advantages, include: beauty, good strength, cauterization ... ,600mm (12') c) 15 x 32 x 3,6000mm(12')2) Cross tee: a) 24 x 27 x 1,200mm (4 ... x 27 x 600mm (2') c) 24 x 24 x 600mm (2') d) 15 x 32 x 600mm (2')3) Wall angle: a ... and materials can be requested by customers.OEM is available light steel Ceiling grid