The Middle Atlantic APM-4 is an aluminum panel that provides a great solution for mounting small items in a rack. The panel is easily drilled for mounting punch-blocks, terminal strips, power supplies, and similar items. Its hinged design provides easy access for maintenance and changes, and the universal mounting pattern holds most small devices easily. The panel is hinged on one side for easy interior access, making it easy to access the equipment when necessary. The captive 10-32 threaded thumbscrews require no tools to open, ensuring that users can easily access the interior of the panel without the need for additional equipment.