Leviton 491RU-HFR Horizontal Cable Management, 1RU, 1.5-inch by 3-inch Front and 1.5-inch by 4-inch Rear 1RU Fits all standard 19 inch racks Horizontal managers include bend radius compliant clips Finger spacing aligns with Leviton patch panel port openings to better manage patch cords Horizontal Cable Management, 1RU, 1.5"X3" Front and rear management