How does rack size impact network installation and scalability, and what common dimensions are used in the industry? Rack size has no impact on network installation, and any size can be used. Rack size impacts the organization and cooling of network equipment, with common dimensions being 19-inch or 23-inch widths. Rack size only affects the physical appearance of the network room and is chosen based on aesthetic preferences. Rack size is irrelevant for modern networks that use virtualized environments exclusively