S-289N812P…Brass Plated Sliding U-Channel Drop Front Secretary Desk Lid Stay. A Strong U-Shaped Steel Stay with Nylon Slider. Brass Plated, Universal Left or Right. 8-1/2″ channel 9″ Arm. 16-1/4″ Long fully extended. Slotted side is mounted vertically inside the cabinet wall, with footed arm mounted to lid at a 45 degree angle. Stay requires a minimum of approximately 14 inches high in the position shown in photo. Lid stops when footed bar reaches the bottom of the slotted bar. Sold by each.