Specification Material: E1 MDF, Carbon Steel Color: Black Process: Plate Pressing and Laminating Mount Type: Floor Standing Number of Tiers: 3 Assembly Required: Yes Total Load-bearing Capacity: About 20kg/44.1lbs Top Table Board Load-bearing Capacity: 10kg/22lbs Top Table Board Adjustable Height: 70-90cm/27.6-35.4in Top Table Board Adjustable Angle: Rotate 360°, Flip 180° Net Weight: 19kg/41.9lbs MDF Thickness: 15mm/0.6in Steel Tube Thickness: 0.8mm/0.03in Top Table Board Size(L*W): 60*40cm/23.6*15.7in Each Drawer Height: 12cm/4.7in Open Storage Room Height: 17cm/6.7in Overall Bookshelf Size: 50*40*46cm/19.7*15.7*18in Package Included 1* Multi-functional Bookshelf 1* Chinese Installation Instruction Other Accessories for Installation.