Contents: 1U vented blank panel x2, M6 screws x12, M6 plastic washers x12, M6 cage nuts x12 Dimensions: 1.75 in H x 19 in W x 0.39 in D Perforated venting helps to cover empty spaces, maintain proper airflow and keep dust out of your rack Constructed from high quality cold rolled steel with a durable black electro-static powder coated finish EIA/ECA-310 compatible; Fits standard 19-inch server racks, enclosures and cabinets