The special design of this solid brass, spring loaded hold back makes the base suitable for either floor or wall mounting options. Holds door firmly in place yet engages and disengages easily. There is a set screw on the side of the door base to adjust tension. The tip of the spindle screws off to insert wood screw into floor.
Door mount measures: 2 7/8" L x 1" W x 1 1/4" projection
Floor stub measures: 1 5/8" H x 1 5/8" base diameter