Blank panel is fixed in 19 inch cabinet,Website:http://www.hqcabling.com, which includes vented / non-vented type.19” Rack Mount Blank Panels for network racks and cabinets are designed to improve airflow within the rack by covering the open unused spaces, the vented blank panel/ non-vented blank panel is constructed of cold-rolled steel and features a black powder coated finish that matches standard black server cabinets and racks.Features:1. Suitable for all standard 19” racks and cabinets2. 1U / 2U / 4U available, customized size acceptable3. Cold Rolled Steel, 1.2mm thickness4. Black color to match most rack and cabinets, customized color acceptable