The Acrimet Facility letter tray is made of high quality plastic, thick walls and metal brackets for unmatched durability and maximum stability, as well as anti slip and scratch bottom pad. Easy access to files. Features a slightly beveled on the front of the tray to prevent documents from slipping out. Additional brackets are available for extra levels (sold separately). Ideal for organizing documents, letters, files and much more. Perfect for offices, homes, clinics, hospitals, schools and many more. Accessories not included. Colors may vary due to different visual screen configurations. Others Acrimet products available on Amazon.com