Features: 1,Ceiling T-grid /keel together with mineral fiber board 2, Use to make ceiling for offices,shops and other placesCeiling grid: Specifications:(Inches) Main tee: 42 *15 *3050 35*15*3050 Small tee42 *15 *610 35*15*610 Wall angle: 12 * 18 *3,000 The length can be provided in accordance with customers'requirements Outer packing: Carton