Rack-mount shelf with depth-adjustable rails for universal flexibility in 19" network cabinets. A fixed shelf, mounted on a rack at four points, offers superior stability and load capacity compared to cantilever or sliding shelves, but is typically limited to a specific installation depth. This rack-mount shelf from Intellinet Network Solutions overcomes this limitation with variable rails that can be adjusted to depths between 750 and 950 mm. As a flexible network accessory, it fits universally in Intellinet and other third-party cabinets that are 1000 mm deep.