A Trestle table/desk,was designed as a space saver,I assume that the legs can be folded flat to the under side,thus making it easier to store in a small space,..as for the 2 lever lock...these were used in most types of furniture,i.e. Wardrobes,cabinets writing bureau,s,etc...and on bathroom doors,...where a minimum of security was needed,but could easily be bypassed if junior locked himself in!