Corner Keyboard and Mouse Tray: This typing platform secures under your desk with the 16.8' x 9.8' corner connector plate and included hardware. Tray supports up to 4.4 lbs and weighs 10 lbs. Please be sure your desk can support this combined weight Under Desk Clearance: Tray requires 7' of under-desk clearance for the track to fit 90-degree angled corner desks. For non-standard corners, the track could require up to 13' of under-desk clearance