Designed to work with the laws of physics,the pivot door provides long-lasting performance and durability by using the floor to support the weight of the door.It rotates on two special concealed pivots,located 7ā€¯inches from the edge at both the top and bottom of the door.Positioning between the concrete slab and drop ceiling at the top,and slab and finished floor at the bottom,gives this door a contemporary and clean appearance.