Sturdy rack case made of plastic and aluminum, with internal space. - Type: Rack case - Materials: ABS plastic, aluminum - Colors: Black, Silver - Locking function: Yes - Size: 4U size, 42cm depth model External dimensions: 55(W) x 58(D) x 24.5(H) cm Weight: Approximately 5kg Thank you for viewing. This is a popular series rack case, a 4U size model! Purchased in October 2024. Selling due to equipment replacement. It has proper rack holes, allowing for the attachment of various rack-mounted equipment. The depth is a spacious 42cm, and the structure is designed to prevent heat buildup. There are stains and scratches as shown in the 5th and 6th photos, but there are no issues with use. Please refrain from purchasing if you are sensitive to these imperfections. As shown in the 7th photo, 12 screws + 1 spare screw are included. (There are also screws inside the case.)