With durable construction and comfortable adjustable quality, the Lynx Single Arm Keyboard Tray - Retractable Mouse Pad is a great addition to any office or workspace. This articulating keyboard tray uses a knob and a simple spring-assisted lifting component to adjust the height and angle of the keyboard. The adjustable height range of this keyboard tray is 5.5 inches. Made of phenolic laminate with a thickness of 0.25 inches, this under desk keyboard tray is extremely durable, even during daily use. An edge protector along the outer surface provides additional protection against wear. With a mouse pad on either side of the keyboard tray, this is the perfect accessory for shared workspaces. A 19"W x 3"D foam pad covered in vinyl fabric adds ergonomic comfort to this tray. Includes mounting hardware with this keyboard tray. For use with a corner desk, this tray requires a minimum of a 13.5-inch wide diagonal corner. Sliding track measures 17.75 inches long x 5.75 inches wide proudly made in the USA. Assembly level/degree of difficulty: Moderate. Made in USA