15T Aluminum black groove t bar: 1. Item no., AL-B15T 2. Material: Aluminum 3. Sizes: Main tee: 28*15*3000mm Cross tee: 18*15*600mm Wall angle: 12*18*3000mm 4.Matching ratio: Main tee: 0.225pcs/m2 Long cross tee: 1.35pcs/m2 Short cross tee: 1.35pcs/m2 Wall angle: 0.2pcs/m2 5.Packing: carton (OEM service available) Main tee: 25pcs/ctn Long cross tee: 50pcs/ctn Short cross tee: 75pcs/ctn Wall angle: 50pcs/ctn PS: The length can make according to customer's requirement.