Delock 19" Brush Strip Panel for Cable Management, tool-less installation 2 HE, grey. The clips that can be installed without tools secure onto standard 19" rails (EIA-310). The long, high-density nylon brushes allow cables to pass through while hiding internal wiring and reducing dust entry. Metal frame with nylon brush insert. Typical use: in server/network cabinets to define and seal cable openings. The package contains one 2U brush panel.