4U rack typically refers to a rack-mounted enclosure that takes up 4 rack units (4U) of vertical space in a standard 19-inch rack. Each rack unit is equivalent to 1.75 inches (44.45 millimeters) of vertical space. Therefore, a 4U rack would occupy 7 inches (4U * 1.75 inches/U) of vertical space.
4u Rack Price
Facebook4U racks are commonly used for mounting various electronic and IT equipment in data centers, server rooms, and networking environments. These can include servers, network switches, audio/video equipment, and other rack-mountable devices.
To find the specific 4U rack that suits your needs and budget, you can check online retailers, electronics suppliers, or contact rack equipment manufacturers.