Middle Atlantic Data BRKT-4RJ/KO - RFB-4TKO-SS

Middle Atlantic RFB-4TKO-SS 4U Rack Filler Blank Panel

Overview

The Middle Atlantic RFB-4TKO-SS is a rack filler blank panel designed to cover unused rack unit openings in open-frame and enclosed rack enclosures. Leaving open rack slots unblocked disrupts front-to-back airflow, raises operating temperatures across adjacent equipment, and creates an ingress point for dust and debris — this panel solves all three issues in a single install. The RFB-4TKO-SS occupies 4U of rack space and features a tool-less knockout design that simplifies installation without requiring additional hardware in most rack configurations.

Compatibility

Designed for use with Middle Atlantic rack systems including the Essex, BGR, and similar EIA-310-compliant rack accessories product lines that use standard 10-32 or 12-24 threaded rack rails. The panel fits any EIA-standard 19-inch rack opening, making it broadly compatible with third-party enclosures as well. Consult Middle Atlantic's rack configurator or your rack's rail specification to confirm thread pattern before ordering — mismatched threads are the most common install issue with universal filler panels.

Installation Notes

The tool-less knockout design allows panel retention without a screwdriver in compatible Middle Atlantic rack frames; verify your specific rack model supports tool-less hardware before relying on this feature. For non-tool-less installations, standard rack screws (10-32 or 12-24, sold separately) seat the panel. Install from the front of the rack for proper alignment. No cabling, power, or grounding connections are required.