Improve the organization and appearance of your rack while maintaining airflow - Compatible with 19in 2-post and 4-post server racks - Easily access your rack with hinged panel - 4U hinged vented panel / Server Rack Filler Panel / Vented Panel for server racks / Server Rack Access Panel - 4U vented rack panel - Sturdy steel construction - Rack screws and nuts included - Access your covered rack with open and shut design - Fill-in unused gaps between equipment in server racks and cabinets.