NavePoint 6U Blank Rack Mount Panel Spacer With Venting For 19-Inch Server Network Rack Enclosure Or Cabinet Black Dimensions: 10.5"H x 19"W x .31"D Perforated Venting Color: Black Installation position: Vertical fixed on the mounting rail Package Includes: 10-32 screws Perforated Panel used for both aesthetic and for maintaining proper airflow Available in a variety of heights Cold rolled steel Powder coating 6U Blank Panel Spacer 10-32 screws