The SRW21U SmartRack® 21U Low-Profile Switch-Depth Wall-Mount Rack Enclosure Cabinet is designed to house EIA-standard 19-inch rack equipment in network wiring closets, retail locations, classrooms, back offices and other areas with limited floor space where you need equipment to. The SRW21U SmartRack® 21U Low-Profile Switch-Depth Wall-Mount Rack Enclosure Cabinet is designed to house EIA-standard 19-inch rack equipment in network wiring closets, retail locations, classrooms, back offices and other areas with limited floor space where you need equipment to. A 21U server rack is a standardized 19-inch equipment enclosure offering 21 rack units (U) of vertical mounting space—where 1U = 1. 75 inches (933 mm), making it ideal for environments where floor footprint, ceiling clearance, or weight limits. A rack unit (commonly referred to as a "U") is a standard measure of the height of a device in a server rack. The height of a one rack unit device is described as 1U, a two rack unit device as 2U and so on. How do I determine the depth of the cabinet I. 21U server racks and data cabinets from Server Room Environments on short lead times with a range of options and features to meet wide set of applications: server room, datacentre, office, retail, distribution, industrial and other harsh environments. This range of 21U racks ranges from budget. in network closets, classrooms and other locations with limited or space where you need equipment to be secure, organized and out of the way. The front, top. A 21U server rack is a 36. 75-inch tall, 19-inch wide standard rack ideal for small to medium data centers, offering structured organization, scalability, and efficient airflow for servers and networking equipment. Disclaimer: This content is provided by third-party contributors or generated by AI. Excel Environ WR600 Wall Rack Network Data Cabinet 21U WxD 570 mm x 600 mm Black, part of a huge range of Network Data Cabinets available from Mayflex.