When space is really at a premium, you need Kwik-Track. It allows you to put one or two rows of laterally moving storage units in front of stationary storage units placed against the wall. You can mobilize open file shelving or cabinets to provide greater storage and filing efficiency. Go Deep: Kwik-Track with Four-Post Shelving. Multiple letter and legal configurations are available. The low-profile track is ADA-compliant. In-track anti-tip safety feature. Aluminum track with steel inserts. Future expansion requires the minimal dismantling of the current system.