Middle Atlantic RFB119-KO 1-Gang Knockout Panel for Rack Enclosures
Overview
The Middle Atlantic RFB119-KO is a 1-gang blank panel designed for rack enclosure cable entry management, providing pre-punched 1/2-inch and 3/4-inch knockouts. Install this panel wherever you need a clean, finished opening for conduit or cable runs entering a rack — common in AV distribution racks, security equipment enclosures, and structured cabling installations where conduit terminates at the rack face or side. The RFB119-KO gives integrators a factory-finished option instead of field-cutting blanks, keeping installations consistent and professional without adding tool time on-site.
Compatibility
Designed for use with Middle Atlantic rack enclosures and rack frames that accept standard 1-gang panel inserts. Fits within the RFB (rack furniture blank) panel series used across Middle Atlantic's rack enclosure product line, including wall-mount and floor-standing rack cabinets that use the standard rack unit panel format. Verify your enclosure's panel cutout dimensions match the 1-gang form factor before ordering — not all Middle Atlantic enclosures share the same blank panel system. Compatible with standard 1/2-inch and 3/4-inch EMT or flexible conduit fittings commonly used in security rack accessory installations.
Installation Notes
Knockouts are pre-scored at the factory — remove with a punch or careful plier pressure, then dress the opening with a conduit fitting appropriate for your cable type. The 1-gang format installs in a single rack-unit-height cutout. Verify conduit fitting thread engagement is adequate for your local code requirements before finalizing the run. For cable management planning, account for bend radius at the panel entry, particularly when routing shielded Cat6A or coax, where tight bends at the enclosure entry point can degrade signal integrity.
