• Standard top pivot 320 included • Bottom pivot mounts directly to the floor • Weight of door borne by floor • Pivot point centered in thickness of the door • Door must have a radius on pivot edge • Not allowed for use on labeled doors and frames • Pivot point remains constant at 1-1/4 from the edge of the door • Furnished with wood and machine screws • Available with extended spindles in 1/2" (13mm) increments up to 2" (51mm) longer than standard