Placement of mount is designed for passenger side floorboard and in front of the seat. The RAM Tough-Tray is a spring-loaded, composite expandable tray that can accommodate 10"-16" wide laptops. The tray includes 4 side-clamping arms with rubber grips. These arms can be moved both vertically and horizontally for a custom fit that does not block ports or drives. Hole patterns on perimeter of tray facilitate the mounting of additional RAM systems to support your GPS, PDA, or other electronics. The aluminum double swing arm with rotating plate allows you to twist and tilt the viewing angle of your laptop, tablet, or any other connected electronic device. This rotating swivel arm gives you even more viewing positions for your mounted electronic device while holding everything firmly in place. Fits '11 F-250, F-350, F-450, F-550, F-650, and F-750; '00-'05 Excursion. Tough tray measures 2.125"H x 10"D. Base is constructed from powder-coated steel. Lifetime warranty.