This 2U Perforated Blank Panel with hexagon holes maximizes the airflow and improves the efficiency of your cooling system. Besides keep dust from your rack, it also can be used as a breathable cover with 17.3" width before assembled in your server rack. br>Product Size: 2U, 19 Inches Width Including: 1 x Main Panel 2 x Holding Side 4 x M4 Screws for assembly Durable: This 2U Blank Panel is Made of Cold Rolled Steel with Powder Coating. Dimensions: 19" width x 3.48" height x 0.39" depth after assembled ; Fitting 19 Inches Networking Equipments .