Maximize your data center fiber management with our rack mount cassette enclosure, offering high-density organization and easy access for various fiber optic terminations within a single 1RU unit. Leviton manufactures a wide variety of fiber optic enclosures for all your project needs, including rack- and wall-mount, 1RU to 10RU, zero-U, high density, and application-specific models. Versatile Mounting: Options for rack-mount. The Norden High Density Floor Standing Fibre Optic Distribution Frame is a durable and versatile solution designed for efficient fibre management in high-demand environments. Made from high-quality steel and deformed aluminium alloy, treated with galvanizing, oxidation, and electrostatic plastic.