The Model 2200, our top FLOOR MOUNT seller, will fit any year of Class C and Class B motor home and secures to the transmission hump or flat floor between the seats, using #10 self tapping screws. The SINGLE BRACE LEG adds stability and safety. When leaving your laptop screen open, while driving, we suggest the ACCESSORY SCREEN HOLDER to prevent laptop hinge or screen damage. Desk heighth is adjustable from 16" to 21" standard and 20" to 24 1/2" with optional height extension rod. The patented CableDock securing system is featured for securing the laptop computer to the desk. This laptop desk is easily removed in seconds, when not needed.