Abstract: A tool for use in hanging a door, the tool comprising in combination a border element having a vertical component, a horizontal component, a first surface, a second surface, and a peripheral edge interconnecting the first and second surfaces with the peripheral edge having an inner extent defining the angle between the components and an outer extent formed opposite the inner extent; a plurality of vertical slots formed through the vertical component of the border element; a plurality of horizontal slots formed through the horizontal component of the border element; and a plurality of spacing tabs, the number of spacing tabs corresponding to the total number of horizontal and vertical slots, each tab adapted to be received within one of the horizontal or vertical slots.