Available in four heights: 1U, 2U, 3U, 4U. The snap-on door complements the styling of Evolution Vertical Cable Manager. Open the door by swinging the cover up, down or easily remove it for easier access to cables. Evolution Horizontal Cable Manager includes plastic T-shaped cable guides to organize patch cords and jumper cords as the cords enter and exit the manager to make individual equipment connections. Four chassis styles are available. Choose the solid, cable passthrough ports, brushes, or grommets options for use in areas where thermal isolation is needed.