Blanking Solutions To mitigate the possibility of overheating of equipment, control energy costs, and guard against possible downtime in today's busy data centers, Panduit has provided solutions for reducing bypass airflow through open spaces in racks and cabinets. From the basic Rack Filler Panels and the truly Tool-less Blanking Panels, to the revolutionary 4 RU – 51 RU, easy-to-install/operate Full-Length Blanking Shade, Panduit offers a full array of blanking solutions.